Change Player Size Watch this video in a new windowHow to Create a Course Group on Facebook

top 10 social sites on alexa

http://www.jackhumphrey.com/fridaytrafficreport/top-10-social-sites-by-alexa-ratings/
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List of Social Networks

http://en.wikipedia.org/wiki/List_of_social_networking_websites

How To Create a Facebook Profile for Instructors

The Best Inventions 2009

http://www.time.com/time/specials/bestworst/0,32232,,00.html