My long-time Kellogg/BCG friend, Al Warms, has gone public with his latest effort, Appolicious. Al sold his previous company, Buzztracker, to Yahoo and went on to successfully run & grow Yahoo News.
Appolicious is a community for application discovery. You can upload your current applications (names only) and the site will begin to profile your interests and those of your friends and others like you. Unlike the one dimensional iPhone App store, Appolicious has a myriad of discovery methods for community members to discover new apps or to share feedback/commentary about existing ones. I have no personal stake in the company today but am a big fan of Al's and think that he is addressing an increasingly significant issue in mobile apps as the number of options for users grows exponentially. Give it a try and comment on your experience.