I’ve been playing with the FriendFeed API in Objective C, although I don’t have anything ready for public consumption yet.
Since the fetch methods basically work like RSS feeds, they can be handled easily using PubSub. Most of the code I had to write was to decode the entries returned into something more useful. The methods which require authentication turned out to be no big deal; it can be handled using PSFeed’s login property and the setPassword: method. My next step will be to tackle the publish methods, which can be handled using NSURLConnection.
To make time to work on this, I haven’t been reading my RSS feeds regularly (or checking Twitter). Setting NetNewsWire to manual refresh only is a huge productivity booster. I also haven’t been blogging regularly, as my readers probably noticed.