Do I "CALL" often?

I wouldn't say I am an IT expert or anything but I do spend up to 6 hours a day on the computer, surfing the Web and instant messaging my friends. My CALL dealings with students mainly revolve around Youtube, Twitter and various blogs as we analyze the different varieties of English (i.e. formal vs. informal) that bloggers and tweeters use. Youtube videos, meanwhile, serve as warm-up activities and lead-ins for textbook units (e.g. Lennon's "Imagine" for the unit, Peace). Sometimes, we'll joke about some phenomena, like "Rickrolling" when we have time.