http://www.flickr.com/services/api/flickr.people.findByUsername.html

For a Flickr photo with particular ID, returns the available version of that photo whose area is closest to a square with the specified side length.

Accesses the most recent posts from a Twitter user's friends' timeline, fetches the site feed for each friend (if it exists), aggregates the posts and sorts them in order of publication date.

Fetches a twitter user's timeline (without "user: " header) and blocks replies (statuses starting "@user ").

Fetches a twitter user's timeline, and strips "user: " header from both title and description.

Emits "content" and "url" fields containing the title and URL of a feed. Works both for ATOM and RSS.

More info @ http://tinyurl.com/28tw3k

Fetches a twitter user's timeline feed, filters it so that only messages starting #channel[space] pass through, and then strips off this header to leave the channel message body.