3. "Compete’s numbers for April show that Facebook has grown from 91,000,000 to 104,000,000 unique visitors, a healthy 14.35% increase from March. [...] The number of unique visitors [on Twitter] has grown from 14,000,000 to 19,000,000, which is 38.56% growth." (Schroeder, 2009)
4. "Some 19% of internet users now say they use Twitter or another service to share updates about themselves, or to see updates about others. This represents a significant increase over previous surveys in December 2008 and April 2009, when 11% of internet users said they use a status-update service." (Fox et al.., 2009)
5. SD and SU Facebook and Twitter figures as of 11 December 2009
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9. SD and SU Facebook and Twitter figures as of 11 December 2009
10. SD and SU Twitter figures as of 11 December 2009
11. SD and SU Twitter figures as of 11 December 2009