Edmodo is like an educational Facebook. Students and teachers can communicate instructionally with blogging, posting comments/thoughts, participate in polls, and join groups.

Here is a webpage filled with ideas for working Edmodo into you and your student's daily lives:
http://cybraryman.com/edmodo.html

Here is a video on 20 ways that Edmodo can be used in the classroom:


Directly upload Web 2.0 favorites into Edmodo:
Glogster
Thinglink: