Twitter Vs Blackboard.

Both Twitter and Blackboard are really interesting tools to discuss, brain storming, recents updates etc. Both are very useful for professors and students to keep in track with their subject matters. Both are similar in sense that both help us to keep track on recent happenings.
I like Blackboard more better because we can write and discuess more than twitter. Twitter allow us to write only 140 characters at one twits,which I think is to little to tell your openion to your friends or professors. But good thing about Twitter is that we can search anything we want and can ask for other's openions. Many people will respond to us very quickly.