Google is one of several search-engines that index and support microformats.
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main search
Google.com supports rel-nofollow (since 2005(?) citation needed) and as of 2009-05-12, hCard, hReview, hReview aggregate, hProduct in rich snippets in search results.
rich snippets
Main article: rich-snippets
Rich Snippets is Google's term for the enhancement of search results ("snippets") with information from microformats from pages.
- See google-rich-snippets-examples for documentation of Google's microformats examples.
- See google-rich-snippets-issues for issues with Google's Rich Snippets Testing tool.
advanced search
Through additional user interfaces:
- Google Advanced Search - Usage rights supports rel-license (since 2005(?) citation needed)
search APIs
Google provides search APIs like:
- Google Social Graph API supports XFN (launched 2008 February). See "Google Social Graph API How are your sites connected?".