Pack rat is pretty cool, it was created from the guys behind thebignoob and iconbuffet. When I met these guys at Web Directions, they said simply that Facebook is huge opportunity for developers to get mass exposure and go viral, but there biggest complaint was the same all of us have: 95% of the apps are absolute garbage. The app they’ve put together is a great example at how a Facebook application doesn’t have to spam like crazy to be effective and fun. It only notifies people when something important happens, and it puts limits on the amount of friends you can invite at once. The Facebook UI is perfectly replicated, and there’s no ads whatsoever. I’d recommend installing it, don’t even play it but just look at how they avoid so many of the *annoying pitfalls of other applications.

and no I don’t make money off installations.. but I do want to steal your items when you sign up ;)