You can use Site Explorer to track the coverage and freshness of your site in the Yahoo! Search index. You can discover:

• Which of your site's web pages are indexed by Yahoo!.
• What websites link to your site.

If you "authenticate" a site by validating your access to a site, you can access more detailed information like:

• What subdomains from your site are known to Yahoo!.
• What other information Yahoo! detects about your site, such as language.

This information can help you to identify any problems in your site representation such as bad link sources. You'll also know if you should provide additional metadata to Yahoo! through feeds or better language indicators.