I've been really getting into using these Ning networks. As such, I have created a Ning network to bring together AP Biology students from around the world. While I designed the Ning with students in mind I think it would also be useful for teachers.
Please check it out, join up, and share with students and colleagues. Any feedback would be great, as I am very new to Ning. I just created the page today so there is not much to see at the moment but of course that will change as students and teachers get on board.