I had the recent pleasure of trying out List.ly and am blown away by what I've seen. This is a site that is great for curating the web into a list and then voting/commenting on each item. This makes lists very interactive and a nice alternative to Pinterest. Also, List.ly is very easy to use and great for sharing content.
I highly recommend checking out List.ly by clicking here!!!
Below is my list on Web 2.0 sites for Education, feel free to vote/comment on which site you feel is best!!!