Twitter in the educational classroom

So, learning about Twitter....not something I really ever use, not something I thought would be super beneficial to me, but certainly something that has turned out to be a useful tool! In my opinion as an educator, I would like to use Twitter, and think it would be a good idea to allow for groups of people to hear about information that pertains to them.  I think it's a good idea to keep up very updated form of info and one can also share amongst themselves, and to certain individuals.  As I'm learning myself as I go along, I think others would too!