What I like about the site: you can post on a wall without registering. The site is slow to load. I cannot move the post-it notes every time I log in. I'm experimenting with another site called
It seems very similar. It is geared for a younger crowd. Of course you can "upgrade" for more services for a monthly fee.
I'm not sure if I am going to utilize either of these. I may wait until second quarter and use first quarter to experiment with the computer and the students in my classroom first.