Before I register a twitter, I think this is unnecessary since I already have facebook.
Now, I feel use twitter very fun, looks like playing text message. I can search the newest events, and send it to my friends. You can see what is your friends doing right now, and rely it as soon as possible. Although People update very frequency, but if their tweet attractive to people, they will still following them.
How does twitter discussion compare to Bb discussion? To an in-class discussion?
The similarity between twitter and Bb discussion is both of them use character limit, and make them simple. Only let users to rely to the posts. The difference between twitter and in-class discussion is that Bb discussion Board allows members of the class to communicate with one another while not requiring all members to be online at the same time, and limit to people to see the posts. Twitter’s tweet can let everyone see your post, and everyone can be your followers. you also can rely anyone's tweets. very interesting.