Research on how to optimize-yahoo of website for Yahoo search

optimization of HTML code
Yahoo! is more interested in HTML code than Google and MSN. Many tests have shown that errors in HTML files may have little or no effect on Google or MSN, and do not prevent the page from appearing on the front of the SERP, but are much less likely to succeed in Yahoo!. Similarly, a Web site or Web page that has fixed HTML errors and is completely authenticated by the Yahoo! is almost impossible to detect in Google or MSN, but it can be found in a qualitative leap in the rankings.
In the design and production of Web pages, for Yahoo! Optimization mainly includes, 1, Yahoo! that appear in the HTML file before (and the page appears at the top of the above is not the same concept) content is important content, which requires us to put the important part of the page prominently HTML file head; 2, Good design of the Web page has a lot of refined code, such as the use of external CSS files, JavaScript files, and so greatly reduce the volume of HTML, such as less or no table can also improve the efficiency of the HTML code, these can be to a large extent to highlight the real content part of the page. In fact, the above two are also not to be ignored for other search engine optimization, but Yahoo! give it a higher weight.
　　 keyword density
Because the search engine algorithm is always in the adjustment, therefore, the specific keyword density is certainly not realistic, and, keyword density is not a universal number, in many cases with the industry different types of Web sites, the best keyword density is also different. Therefore, the feasible approach is to analyze the site corresponding keywords SERP, analysis of the top 10 sites or Web pages used by the keyword density, after all, the ideal keyword density is always regular. Typically, the top 10 sites in Yahoo Serp, according to the competitive keywords, keyword density in addition to very individual 0.5 to 1% (low-end) and 5.0 to 8% (high-end), most of the between the two, At this time as far as possible the keyword density set to slightly below the maximum value generally can achieve optimization purposes.
　　 Reverse Link
On the reverse link, in the big aspect of the rules of the search engine is not too much, in the content-related sites using keywords as anchor text of the inverse link is also the Yahoo ranking algorithm is a crucial factor. In contrast, Yahoo! to reverse-link processing is more similar to Google, and MSN is slightly different.
In the site optimization for Yahoo!, the reverse link must be considered:
　　 Quality of links
Similar to the way Google uses PageRank and TrustRank to determine the quality of the inverse link, Yahoo! uses similar techniques to eliminate unrelated links or spam, and in the Yahoo! Ranking algorithm, the quality of the link is heavier than the sheer number.
In Google's site optimization, the quality of the judgment link can often be weighed by viewing the PageRank of the link source site, although the PageRank shown in Google Toolbar is not accurate, but at least a relatively simple basis for judgment. So how do you determine if a link is judged by Yahoo as a high quality link? The simple way is to see if the source site of the link appears in the Yahoo! of the same or similar keyword SERP position, for more accurate judgment, also need to see the site's whois information, Yahoo! Generally believe that the site can be relied on the domain registration time of at least three years, and also to see whether the source site has a sufficient number of non-exchange links, as well as the number of outbound links from the source page, the number of outbound links on the same page, its influence is smaller, and so on.