Twitter is beneficial?

I just had a class the other day where the guest speaker talked about the fact that he used twitter to learn about new things going on in the field of music education.  I've never been a big fan of twitter because it can't really keep my attention, but this guy had a great point.  He showed us his own twitter and it was literally filled with posts from other music educators talking about blog posts that were helpful in a bunch of various classroom situations.  There were posts about music education seminars, music education clinics, and anything else you could imagine.  After this class I have decided that Twitter isn't pointless but can be beneficial if used the right way.  Musicians have always been a tight knit group and it looks like Twitter is only making us even tighter.  I can't wait to get started :)