Twitter as a Learning Tool. Really?

I was searching through articles on the American Society for Training and Development, specifically how tools like Twitter can be used for learning.

I came across this article: ASTD - Twitter as a Learning Tool

The article talks about how people within a classroom or workshop are tweeting about their experience and thoughts in real time as they are learning and participating in classes.  This can be annoying to teachers, but the author argues that Web 2.0 is helping with making learning more interactive and can provide real time feedback on the learning environment.

I pondered this for a moment and tried to think how I would react if half of the attendees in one of my workshops was tweeting as I was talking.  I have to say I believe I would be somewhat annoyed because I would assume they were not paying attention.  However, I can understand the collaborative possibilities for Twitter in the learning environment.  I believe there is still work to be done to incorporate micro-blogging into the classroom in a way that is collaborative and not distracting.