Too many apps
These days, there are so many new applications getting released I have hard time keeping track what's what. Somebody should keep an index of this stuff. The long tail of apps sounds like an interesting way to spend rainy days...
Chomp Appsfire Appolicious AppAware Appboy Frenzapp AppESP (AppStoreHQ) Chorus StumbleUpon GameFinder (Slide to Play) AppShopper Smokin Apps Apptizr Appsaurus Heyzap - (just launched their new android check-in based app)
In my personal opinion, none of them have truly solved the problem of app discovery but I would be curious to get your perspective on any of them.