I have had twitter for a few years but haven´t used it to it´s fullest potential. I followed our local school district as well as the AEA and the Northwest Iowa AEA too.
One person I do enjoy following and reading what they have to say is Todd Nesloney @TechNinjaTodd. He has written a couple books that I have enjoyed reading such as Kids Deserve It, which I would highly suggest. He has a lot of valuable information to share with others.