Great summary of search engine optimization

 The first part of the algorithm principle
pr value based on the following two general premise:
1, a page is referenced several times, then it may be very important;
Although not a page number reference, but page references are important, then it may be very important; the importance of a page is passed to it refers to the average Web page. This important pages as authoritative (authoritive) website.
2, assuming users randomly access the beginning of a collection of web pages, and then follow the link to the page browsing forward, not back here, then browse the probability of the next page is to be browsing the web pr pagerank values of the value of the factors

pr value of the expression from 0 to 10 of 11 values, in the google tool bar to a horizontal green bar graph display, 0 cases were white. It is not for the web site, so a site's home page and inside pages tend to have very different pr values. As the process of google marketing reasons, Chinese web pages than English pr value of the whole page. on Chinese web sites, with 3 pr is the foundation, 4 pr operator compliance, 5 pr can be described as good, and 6,7-level pr even very good. Of course, as pr the most direct factor is from the link, so this rating does not mean the level of standard content, the site's content quality of the pr impact is indirect, long-term. According to pr value algorithm principle, we know of a website (home page) pr value of the following main factors:
1, the quality of incoming links:
imported under the preceding link for high quality analysis, the need for high pr value from the following websites:
in the search engine category and have added the site to exchange links directory
pr value obtained from not less than 4 and subject to your related or complementary websites
your link appears in the flow of large, well-known and frequently update the important site (such as news source)
exchange links with your web site with few links to
and export high-quality content web link (pr values have increased potential)
2, the number of outgoing links:
calculated based on the principle pr, due to the importance of a page is passed to it refers to the average web page, so in turn, Look, too much of a page link to the potential export value of the loss caused by the page pr. but the content point of view, the appropriate number of topics associated with the Export link to the search engine a good impression. Thus, a page , especially the number of links to export page of the grasp, should take into account the contents of the two key words pr value and the balance between the number of links that control the export to no more than 10 is appropriate.
3, a search engine included the number of pages in the site of
seo, people too focused on core keywords and page ranking the performance of the situation, but often overlook the extremely important issue: the search engine on the number of pages a site contains. The latter in seo also has important significance. a core keyword query with a poor website ranking, possibly due to a large number of pages to be crawled using other keywords in the user query, the page for the top three rankings. because the user search Key words used in a dispersion, makes this situation is often a tremendous traffic to the site.
because of the number of pages included a direct impact on traffic, so the value of pr is great. were included page more home pr higher. but needs to be emphasized is that the number referred to here is to be included in the total number and ratio of web pages, rather than the absolute value of your page. For example, a site with 50 pages is a collection of 10 pages, the site was included in the ratio is 1 / 5, a 5,000-page site is a collection of 500 pages, the ratio is 1 / 10, the result is included in 10 pages than 500 pages of the website contains also more top edge. but all the search engines, how to be the ratio of how much good, there is no relevant data.
with: check the number of pages your site: search engine, type in: site: google-google.blog . sohu.com / (If you enter: site: tomx.com, is available under the domain name in tomx.com number of pages on all your domain name).
Part I: Domain and host of the impact of
seo domain name and host a site basis, select the domain and host business websites should focus on image and quality, especially for the network marketing lay a solid foundation to carry out. Also, choose a good domain name and host is also the first step in beginning the search engine optimization.
domain domain name selection and seo
ip: each site corresponds to a domain name ip address, ip address is assigned to each computer on the network or network device identification number. Domain name servers must be (dns) for analysis, conversion into digital ip, to let the computer understand the identification, such as: 219.136.248.149 Most sites are located in small and medium enterprises from a server by a number of virtual hosts out, from multiple sites sharing a server and ip address, a number of web servers There are hundreds of domain names share a single ip addresses. This is lower cost of owners, but the site's search engine rankings have the following potential risks:
1, shared hosting to other sites if search engine penalties, will be more or less affect on your website. If you have a website under the same ip cheat, our search engine will be the ip of all sites under the penalties. Fortunately, most search engines will not so arbitrary, like google, not normally associated of such punishment.
2, if the search engine server for some spammer to punish, the ip is considered to be spam, the joint that all sites are under ip been implicated in the decline in ranking of these sites or be removed in the search engines.
tools Recommended:
search domain name ip:
Search Keywords:
ip Reverse: (See under an ip address Share what domain name. free registration)
secondary domain name (sub domain):
the form of two domain names, such as: yourname.66778.cn, rather than
has its own independent domain name is search engine friendly website basis. There are many sites that offer free space, such as blog (blog) free space, free space enterprise, free buffet station, e-commerce platform, usually the user is assigned a secondary domain name, or a page stored in the site path next. This is extremely detrimental to the search engines value your site, two domain names in addition to user access is not convenient, it also has the following drawbacks:
1, if you are using two domain names be punished for the main domain name, you The site will also be involved;
2, will require a lot of search engines included under each domain number (eg:
, english.66778.cn and bbs.66778.cn), if
3, When the domain name provider to cease operation, your website along with the hard business to lose your domain name and go down the drain;
4. Web site traffic ranking, you will owe all of the traffic by relying on top-level domain.
second best domain name for your Web site up an independent domain name, then do domain forwarding (free), is a lot of auction sites, shops are suitable for this method of customer access and website management very useful.
domain in characters: in addition to taking the principle of domain user visits, the search engine, whether related to the domain name contains keywords problem. English content sites if the domain contains keywords, or keywords for the domain name of compound , should be separated with a hyphen. such as: www.made-in-china.com and not www.madeinchina.com. This is because search engines are usually separator - as a space to look at, so it can identify your key words, the website ranking points (although the impact is not great.) dashes separate groups after the keyword phrase can also get more search results, such as www.madeinchina.com is that only one word madeinchina, the made-in-china were made in china as a normal phrase.
some search engine directories on the website in the category rankings are based on the name of the domain name or website title in numerical order or alphabetical order and even Chinese strokes, the overall number of letters off than forward. yahoo! China, said that in the same category, the site is arranged according to alphabet order.
google pages, according to their original level of technology commonly used to distinguish the important sites, emissions in the front of the directory to improve the efficiency of Web search. In addition, the domain name suffix choice has some stress. There is a point of view: in the same circumstances, non-commercial sites on behalf of the suffix. org and. net has more than. com more ranking advantage; on Chinese web sites, said that the Chinese domain. cn and. com.cn off than non-regional. com has certain advantages.
host selection and seo
hosting provider selection:
the host of the site's search engine rankings greatly. When looking for hosting providers, do not only consider the price factor. If you have repeatedly submitted to the google site, but google has been no index of them, there may be site where the server is a problem. So when you select a server to pay special attention to the following points:
1, to avoid using the free hosting free hosting
which often occur spammers, mirror sites, doorway pages search engine spam, Many search engines are reluctant to index on the host site for free; the same time search engine directories such as yahoo is difficult to include commercial sites from free hosting. In addition, difficult to ensure that free hosting services, often the server overload, excruciatingly slow, dang machine frequently, or even shut down services, which will directly affect the site ranking.
2, select a reputable hosting provider
search engine indexing process to access the regular or irregular your site. on frequently updated Web site , google's googlebot robots known as spiders mm, generally of small magnitude to climb every day about a month for a major index. If the spiders can not open pages in the index or when the slow download speed, then give up the index. so you Site work at all times, to win the spider's favor. This will require site storage of the host system provides fast, stable and secure service, the best 24 hour customer service support and maintenance to ensure your website fast, reliable, stable operation.
host transfer:
If you want to transfer web hosting services, to cancel before the original service provider, first find a good new suppliers. first in the new service provider to open an account at to ensure that all documents are passed correctly on the new server. Web site running on the new server not affect the original and then contact your provider to inform the other party to terminate the cooperation, but to ensure that they are not immediately related to your site. again Contact your domain registrar (which may be the original host provider), change the domain name server (dns). name server function is to resolve your domain name into the computer to recognize the ip address. the old into the new domain name server, This process takes about 24-48 hours to take effect within a few cases may be 72 hours. this time, if a search engine just came for your web page, or catch the old ip address on the website, or catch the new after the effective date of the domain name resolution sites, in short, will not be a site not open the gap.
Part II: the core of search engine optimization: keyword strategy
potential customers or target customers based on the search engines Enter your site to find the statement, resulting in a keyword (keywords) concept, which is not only the core of search engine optimization, but also the entire search engine marketing must focus on the core

first determine the choice of keywords your core keywords, and then arranged around the core combination of keywords or phrases produced key phrases. of enterprises, businesses, the core keyword is their business scope, such as product / service, industry positioning, and corporate name or brand name and so on. To sum up, select the keywords have the following skills:
1, from the customer point of view of potential customers searching for your products will use what words?
This can get feedback from a number of resources , from your customers, suppliers, brand managers and sales staff there informed of its thinking.
2, will be expanded into a series of phrases keywords / phrases not single words, but on the basis of a single word expand
such as: design r r Shenzhen web site design Web site design. English Keywords can be used well-known search engine tool overture keyword suggestion tool to detect these key phrases, you can see your keywords in the search for the last 24 hours by the frequency, the most Good keywords are those who have not been widely abused many people search words. Chinese Baidu related tools can provide keywordsandbox google search and keyword matching tools and extensions.
tools Recommended:
google adwords Keyword Tool: search for a specific keyword query and the expanded matches common https: / / adwords.google.com / select / keywordsandbox
Baidu keyword tool: a common search for a specific keyword query matching and query expansion heat
Baidu yahoo google keyword index search new
3, the multiple permutations and combinations to change the word order of phrases to create different combinations of words not commonly used in combination with
, combined into one questions. contains synonyms, replace the word Metaphor and common misspelled words. contain the name and trademark to sell products name. use other qualifiers to create more word combinations, words, four-character combination.
4, not with the meaning of the keywords are too generic
If you are involved in packaging machinery manufacturing, select the machine as the core of your keywords will not help to attract target customers. In fact, in order to find the exact information needed, users tend to search for specific words and combinations to find information (in particular combination of two terms), rather than using a big, generic concept. In addition, the use of keywords too broad sense, it means that your site keep up the site more competitive position, it is difficult to win.
5, with their own If the brand is known do keyword
enterprises, then do not forget to use your keywords in the company name or product brand name.
6, using the geographic location of service is particularly important in the local business . If your business based on local, then add the region name keyword combinations such as Shenzhen construction sites.
7, review
search keywords competitors use keywords to make your competitors thought you might miss some of the phrases. but do not copy anyone's words because you do not know how they want to use these keywords to keywords on your own mm. Find someone else's keywords you have chosen the only Key words were added.
8, no nothing to do with their own keywords
will always be some vocabulary included in the popular keywords in your meta keywords mm although this popular has nothing to do with their content. Some people even to rival brands to own keywords, which not only infringement, may be sued (more than similar cases abroad), and because of these so-called popular vocabulary does not appear in the content, so there is no ranking real help, too many keywords may also be subject to penalties of false lower ranking.
9, control the number of keywords in the keyword
a maximum of not more than 3 is better, and then everything for these Expand the core keywords, keyword density to ensure reasonable. search engine also clear that the theme of the page. If you do need to show a large number of keywords, you can write in other pages scattered and targeted optimization, these pages also has a doorway page ( entry) effects. This is why the home page and inside pages of the key words often differentiated reasons. The most typical scenario is to have different products and services cases, single-page optimization for each product, not listed In a front page.
attached: View competitor keyword method: open the target in the browser page Click to view r r r click keyword density
source in determining their own keyword, you need to the appropriate page text appears these keywords. keywords appear in the page frequency, that is keyword density (keyword density), is in a page, the total of all the pages in the proportion of the text, the index of search engines optimization play an important role. keyword density is generally 1% to 7% would be more appropriate than the standard too high or too low there is suspicion.
remember to avoid keyword stuffing, that is one of the keywords there is not arranged according to the needs of the content, but to please the search engine keywords people accumulate (stuffing). It has been classified as malicious acts by search engines (spamming), there is the risk of being punished.
tools Recommended: < br> Keyword Density Check (English): frequent keywords and their density asp name = keywords> www.seotoolkit.co.uk / keyword_density_analyser.asp
key principle of distribution of the distribution of keywords called
: everywhere, be emphasized.
1, page code title, meta tags (keywords keywords and description description)
such as: e book www.ebook.com code:
2, body of the page the attention of the most attractive places
text content appears to be appropriate keywords, and be focused, which means the formation of reading habits of reading the user priority mm from top to bottom, from left to right as keywords mm key distribution location include: the top of the page by the left, title, body, within the first 200 words. In these areas there are more keywords on the top help. If the text in a keyword-rich web site describes the top place (this place usually arranged to put banner ads). This has the advantage of both users and spiders to understand the content as quickly and bold attention to the spider, play a great role to its ranks. The code is shown below: < br> This site is a non-commercial site, designed for the majority of search engines to provide a learning researchers to exchange places. Here you can find a lot of information about search engine optimization (seo information, articles), website optimization information . This information can help you make your site optimized to meet the appropriate number of search engine rules to get a better ranking.
3, the hyperlink text (anchor text)
In addition to navigation, Site Map, conscious use of anchor text keywords, you can also artificially increase the hyperlink text. such as a children's clothing manufacturers website can add the following industry resources: China's network of children and other organizations in the network of children hh text with children to achieve an increase over the link The purpose of the link text. It is also worth adding site links for reference when, that is the best link object contains your keyword or related semantic web.
4, header tags
the body in the title text. Search engines place more emphasis on the text in the subject line. with the bold words are key words are often the place.
5, image alt attributes
search engines can not crawl images, so pages in the picture attributes when making alt keyword is added to a good search engine friendly way, it will consider the contents of the picture consistent with your keywords, which will help position. English Web content and Web sites during the domain name the folder options, they can consider the keywords (the use of key phrases separated by dashes), such as www.made-in-china.com. but very small effect on the google rankings.
Part III: search engine friendly web pages design by web design
general web designer to complete. designers sites often only from the beautiful, creative and easy to use point of view, to expect that for a good search engine rankings for business websites, has been far far enough, the site planners should at least demand for designers to submit a memorandum to remind the need to tie in the design and attention to the link.
directory structure and url
url is the Uniform Resource Locator, ie each page URL path. Web site files directory structure directly reflected in the url. clear and brief the directory structure and norms of naming not only beneficial to the user experience and web dissemination, but also a manifestation of the search engine friendly.
directory hierarchy:
for a small web sites, usually only one layer of subdirectories, as follows:


search engine, directory structure of this single ideal that the flat structure (flat).
and large number of sites, often require two to three subdirectories. like this:

search engine or two to go crawl under the three sub-file, but preferably not more than 3 layers, If more than 4 layers, like the following on this page, the search engine to search it difficult to:
, of course, the following cases, even the fourth layer of depth and even deeper pages, too, can be searched:
1, provides an important if the page content, a large number of external links from other sites (inbound links);
2, if the page to add a link to this page, you can directly reach the home page, search spider can still easily find it;
3, if there are other sites on the page links at the top level page, the effect is like you do in your own home page on the link.
In addition, graphics, scripts, cgi-bin css style sheet and create a special directory is their income which is generally not placed in the root directory.
directory and file naming:
according to the principles of ubiquitous keyword, you can name and file name in the directory using the critical words. but if it is keyword group, you need to use a splitter. We used a hyphen - and underscores _ are separated, url spaces are also often code% 20. Therefore, if the file name for China, it is possible there are three separate forms:
made-in-china.htm
made_in_china.htm
made% 20in% 20china.htm
But in fact, at least for now _ as delimited google does not agree character. on google it, made-in-china and made% 20in% 20china are equal to the made in china, but made_in_china to be read into madeinchina, together, the key words would be meaningless.
Therefore, directory and file name of the group if there are key words, use a hyphen - not separated by an underscore _.
url should be as short as possible. It was simple to add keywords to the additional construction of one more child with keywords directory, change the directory structure. url contain the keyword itself help to improve the rankings are not large, so this practice unnecessary, but also search engine objectionable.
url absolute and relative url:
absolute url: the page top-level domain, including the path that contains the complete url.
such as:
general, google url in the rankings do not care about using a relative path or absolute path. dynamic url: Many sites have database-driven current generated url, that is, dynamic url, is often manifested in the url appears ?,=,%, and &, $ and other characters. dynamic url extremely beneficial to search engines crawl the web, seriously affect the site ranking, usually through technical solutions program will be dynamic url into static url in the form, such as:
will be transformed into dynamic url below will be specifically mentioned in the solution.
navigation structure
site navigation is to guide users to access the site sections , menus, online help, collectively form the layout structure. Its main function is to direct users to easily access content, to evaluate the site of professional degrees, an important indicator of availability. the same time, many search engines have prompted effect. Generally speaking , site navigation should note the following:
1, eye-catching clear
main navigation main navigation generally reflected a directory, through which the user and the spider can drill down to access all the important content to the site. So the main part must be the first screen on the website home page prominently reflected, and the best use of text links instead of images.
2, breadcrumbs (breadcrumbs) path is the metaphor of bread crumbs
the so-called user to the main navigation access to the process of landing page tips the path, which allows the user to know the location of the site not lose direction and facilitate the return to parent page and starting point. the best path to add links to each section.
as follows: Net Information Design: Net Information Log> Technical Information Home
addition to the main highlight important sections, sub-directories should also be an important way to link the contents of the home page or other sub-page rendering times to focus. search engine would have such a multi-station times the link appears to give adequate attention to the PageRank (pagerank) of great help to improve, which is the level of each site's front page page level is generally higher than other important factors, because each sub-page is a link on the home page.
4, use the Site Map
site map (site map) is a secondary means of navigation, was originally designed for the user to facilitate the users to quickly reach the target page. a good sitemap site design often reflects the complex topology List of relations, with a static, direct, flat, simple features. more use of text links, no or little use of pictures modified in order to speed up page loading. These characteristics meet the requirements of search engine friendly, Web sites also have maps in the seo significance. especially for those who use navigation and dynamic techniques pictures generated web pages, the site map through the text links may be to some extent make up for the spider does not recognize the picture and dynamic web pages is not visible due to the risk.
Note, the site map should also focus, as the backbone of the content and links are given, but not all minutiae. put too many links within a page is not appropriate. google site map clearly links if more than about 100, then best to break the site map into several pages.
tools Recommended:
xenu: Generate Site Map
frame
frame structure, the frame structure (frame) is represented as a web page of a one remains fixed, the other part of the information can scroll up and down or left and right through the mobile display, such as the left menu fixed, mobile text message, or some of the top navigation and logo remain fixed, the other part of the up and down or move around. We often use e-mail frame construction. Frame page Another manifestation of the deep page name does not normally reflected in the url, even into the deep sub-pages, the browser displays the url is still the home page url.
Frame site reflected in the overall superiority of the page to facilitate the consistency and update. especially for those large sites, the use of frames can be relatively easy site maintenance. But the search engine framework is a big problem, This is because most search engines do not recognize the framework, there is no interest to capture the contents of the framework. In addition, some browsers do not support frame pages.
If the page has used a framework, or for a of reasons must use frames, you must use the noframes tag in the code is optimized, the noframe tag as a plain text content of the page. in the region that contains a link pointing to page frame, and descriptive text with key words, At the same time the area outside the framework of the text also appears keywords. In this way, search engines can properly index the information within the framework.
Another way is to use iframe or inline frame (inner frame) to bring technology to avoid the frame inconvenience. the so-called iframe is a form of the framework, which is equivalent to the main browser window a child window embedded in the content automatically open. iframe can be embedded in any part of a web page can also be free to define its size, its code is displayed as:
on search engines, iframe is visible in the text can also be traced to one link to the page, but the user can see the difference is, the search engine as a separate iframe content page content, nothing to do with the page being built.
image optimization
general ...