If you're looking for the 'next thing' with which to boost your Facebook ninja status, Subsume just might be it. Right now it's an alpha so it's a little rough around the edges, but it primarily displays updates from your Facebook friends with Growl, a TUAW favorite that allows applications to display useful popup alerts when something happens (your song changes in iTunes, new email arrives, a buddy goes offline, etc.). Setting up Subsume is easy, just like with any other app that hooks into Facebook; you're taken to a Facebook login that prompts you for your credentials (if you aren't logged in already), then Facebook asks you to authorize Subsume to display your info. At an interval that Subsume's site doesn't describe yet (remember: it's an alpha folks), the app will check your Facebook account for any status updates from your friends, then display them in Growl's handy, unobtrusive update alerts. For the Facebook obsessed, this could turn out to be a great app that keeps you on top of what's going on without having to keep some kind of a window always open and taking up space.
Subsume is provided as free for now at subsume.info. I should note that the developer, Jacob Jay, developers one of my favorite picture sharing utilities: PictureSync, which we've mentioned on TUAW a few times before.