Twitter in Education?

I may not be able to twitter with my elementary students but David Parry, a professor at the University of Texas at Dallas makes a good argument for using it with college students. Check out his video here: http://chronicle.com/media/video/v54/i25/twitter/. Plus... he uses his iPhone for tweets just like I do... and I have to admit that is the best part of twitter... keeping up with my techy teacher twitter tweets on the road! (Can you tell we are learning alliteration in the library?) Speaking of iPhone... have you seen the SDK release video? Can't wait for June!