what is blackberry BBM?

ANSWER TO THE ABOVE QUESTION BBM means Black Berry Messenger It is a messanger app available on Blackberry mobiles. just like gtalk, yahoo messsanger. But this app is specifically made for mobiles and a propreitry software of RIM company which sells Blackberry mobiles. Black berry mobile users can chat with each other through BBM, send photos, share files, audio etc. You need to have internet connection on your phone for this. BBM uses internet.