Edmodo (parent-permission-required-under-13, 13+, social networking)
Edmodo allows users to create online classes an discussion groups. (Please contact your campus ITS for your campus code).
There site also offers Edmodo in Action (videos to show how Edmodo looks in various content area settings – see example below) as well as webinars (e.g. Introduction to Edmodo and 20 Ways to use Edmodo).
Need more inspiration? Check out “7 Brilliant Ways to use Edmodo that will Blow. Your. Mind.” and “15 more ideas…“.