A client asked me to poke around on App.net, a social networking and microblogging platform, which also serves as a reference implementation of their API.
Since the best way to understand an API is to start using it, and since I try my best to be a good Open Source citizen, I put together a basic stub of a Known plugin for it.
This plugin provides basic syndication support for status messages and long form posts, and serves as a useful starting point for more exciting integrations.
Anyway, have a play, comments and pull requests to the usual places!