Friendfeed
Hacks
FOAF
http://friendfeed.com/zeroinfluencer/subscriptions?output=foaf
OMPL
http://friendfeed.com/zeroinfluencer?output=opml
Comments as an RSS
http://friendfeed.com/zeroinfluencer/comments?format=atom
Likes
http://friendfeed.com/zeroinfluencer/likes?format=atom
Likes and Comments
http://friendfeed.com/zeroinfluencer/discussion?format=atom
Search as an RSS feed
http://friendfeed.com/search?q=cats&format=atom
API
http://code.google.com/p/friendfeed-api/wiki/ApiDocumentation
Change Log
http://changelog.friendfeed.com/
Blog
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