Chat for Facebook PRO by mSonar

Chat for Facebook PRO is the only real chat application for Facebook on the BlackBerry® App World™ that let's you chat with your Facebook friends without using a vanity URL, a username, or anything like that. You simply login in to Facebook once, enable Chat for Facebook, and that's it. You're good to go and ready to chat.

Chat for Facebook PRO is also the only application to use the new XMPP protocol for Facebook Chat, which offers faster communications and smaller data requirements. So not only can you chat with your Facebook friends faster than the chat on the Facebook website, but you are also saving on expensive data plans with your carriers.

Chat for Facebook offers a simplified interface, with no cumbersome menus or noise graphics to handle. Just a simple, intuitive, Facebook-inspired interface centered around the most important task - to let you chat with your Facebook friends. Fast, easy and simple.
New update contains :
Very Low Battery consumption .
popup notification on incoming message when APP Chat is running on the background
notification field when chatting with a friend and there is incoming message from other friend
message delivery status
chat states, ie displayed status when your friend is typing
search functionality on friends' names
profile pictures next to friend's name (please enable from Options page)
home screen icon notification
ability to set status to Available or Idle from menu
autofix -enabled text field
auto run on startup
integrated tones, and LED notifications to BlackBerry® Options
auto reconnect on the background if disconnected from Facebook server
 
Download Chat for Facebook now and start chatting with your Facebook friends!