Basically twitter and blackboard are both used for a online conversation.However there is a few differences between them .For instance on tweeter you are only allowed to type 140 characters (which a hate about it) But I guess that force people to be creative with their words.On the other hand blackboard has no limit ,you can type as much as you wish and is more private in terms that your article being available only to your classmates as opposed to twitter that is open to the public. Another difference is that Twitter is very useful in the fact that you can add tags and search for topics that interest you, while you can not do that on blackboard . Moreover twitter is way faster than blackboard .On the twitter you do not have to go through numerous of steps like looking up your class ,discussion board and etc.
I also think that blackboard and tweeter discussions can not really be compared to in class discussion.First of all in in-class discussion you have conversation face to face you get the passionate :). You can emphasize words by doing so you help your classmates understand the your point. Second of all in in-class discussion you improve speed of your thinking because you don’t have a time to go grab a beer to help you think what your response be to the discussion.
As for me I think I would prefer online discussion as I like to take my time and think through careful every word I say .Moreover I enjoy taking breaks in between 😉 .
summer12aziznewmedia 