Facebook SEO: Facebook is making steps toward allowing applications to make their information SEO visible. Smart move as more search engine visibility ultimately means more traffic for facebook. This will quickly result in millions of uniques visits per day once the developers have made the app content search engine visible.

Starting last week, you can serve XML sitemaps off apps.facebook.com domain, and notify search engines about changes on your pages. Naturally, this works better for pages that display content without requiring logins. (this goes back to an earlier post i did discussing how facebook wants apps to be visible without having to actually add the app).

The best way to SEO your Facebook applications for the major search engines is to register your site with appropriate services:

* Google Webmaster Central
* Yahoo! Search Site Explorer
* Live Search Webmaster Center
* Ask.com Help for Webmasters

Each one of those services allows you to register a sitemap that lists out all URLs that search engines might find relevant. Publishing a sitemap does not guarantee inclusion in the index, but it does facilitate it for pages not linked anywhere else on the Web. Facebook will serve any file with “.xml.gz” extension without interpreting it through FBML parser.

When your pages are updated, you can additionally notify search engines about this change by issuing GET requests to these URLs:

* Ping Google
* Ping Yahoo!
* Ping Live
* Ping Ask

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