Thing 19:

TeacherPop is very much like a Facebook for teachers. I thought it was very neat. As far other online communities, I am a member of Yelp. Anytime that I am on vacation, I use Yelp mainly for restaurant reviews to decide where to eat. It also houses reviews for pretty much any service you would ever need. I find the reviews from others on there very helpful. I use IMDB, which is a movie database, but I am not a member of it. I have also heard of last.fm and GoodReads, but never really used them. TeacherPop is really the only one that I could see as beneficial to teachers. Maybe the others listed could be used with or for activities and lessons in the classroom.