http://mashable.com/2011/01/24/the-history-of-social-media-infographic/
Thursday February 10th, 2011 00:37 The History of Social Media [INFOGRAPHIC]
Thursday February 10th, 2011 00:33 Don’t tweet that: How not to be a Twitter dork… Agree?
http://edition.cnn.com/2010/TECH/social.media/06/09/netiquette.twitter/index.html