Guess how many social networks there are? (such as Facebook, MySpace, Goodreads, etc.). 350+ such technologies! This is an interesting list of as many of them as we know about, organized by subjects. There are some interesting student ones, geared more for university students.
An interesting video about how social and digital people are now a days. This video was made to explain the importance of internet advertising to marketers, but there's application to teachers too as we try to understand our students' worlds.
I don't think we should have students just playing games all the time, but they can be a good arrow in the quiver of teaching methodologies. This is an interesting article into the use of games to teach core subjects, like science.
I found this website when doing an assignment for another class. It has lots of ideas of engaging simulation activities for lots of subjects within social studies, such as civics, economics, history, geography, and others. Some of my favorites include the Oregon Trail activity and the Presidential Interview Panel.
If you cannot find the type of activity you are looking for, there is a great search bar that allows you to look for more ideas you weren't even aware of.