I am teaching the Social Networking Tools course at FIS PLC (Professional Learning Centre at the Faculty of Information Studies, University of Toronto) on Friday. There are still a few spot lefts if you have been waiting.
I've been teaching this introductory survey course on a frequent basis since last August. Demand is finally starting to slow up for it. If you still want to catch it, I suggest signing up for the March 28th class. If you can't make it that day, there is one more scheduled for May. We're not sure if there will be enough demand after that, so don't miss out on your chance!