[bulletlist] Launched in 2004 As of January 2011 has more than 600 million active users (Up from 350 Million in 2010) 50% of active users log on …
[bulletlist] Launched in 2006 More than 190 Million Users as of October 2010 (up from 58 Million in 2009) 65 Million Tweets per day 800,000 Searches per …