David, W. (2010, November 23). Privacy Groups Ask For Greater Oversight Of Pharma Ad Targeting. MediaPost Publications / Online Media Daily. Retrieved November 30, 2010, from http://www.mediapost.com/publications/?fa=Articles.showArticle&art_aid=140050&nid=121074
Sullivan, L. (2010, November 24). Will Twitter Launch A News Service? Is It An ‘Information Network’? MediaPost Publications / Online Media Daily. Retrieved November 30, 2010, from http://www.mediapost.com/publications/?fa=Articles.showArticle&art_aid=140125&nid=121138