Sure, there are quite a few BlackBerry communities on the web, but are any of them able to trump an official website, stemming directly from the manufacturer? Lauded as "the official community for all things BlackBerry," MyBlackBerry allows users to learn about new applications, connect with other users, and offer tips and tricks for others to utilize.
The website can be found here. Of note, MyBlackBerry currently requires an "invitation code" to register, which we were unable to bypass. Hopefully RIM will remove it and allow all users to enter soon.