Digg for OS X Apps

iusethis is a new site that just started a public beta. The idea is to list Mac OS X apps and use some digg-like stuff to find out the popular ones. Tagging is of course in there and they'll be adding recommendations based on your rankings soon enough. It should also be able to tell you when new versions of your apps are available. You should be able to see what's on my mac, here.