Teachers should only use social media as a teaching tool to improve their students' education. "If it's not to the betterment of your kids, why are you doing it? It may not be for you," says Brian Aspinall, an elementary teacher in Chatham, ON who speaks and blogs about technology and educational reform. "Don't do it because you went to a conference on Twitter and someone said you should do it."
The Assessment Institute is a great conference and I'm sure you will find something that interests you there. Great people and a wonderful, caring, and supportive environment focused on improving learning.