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state of the twittersphere
State Of The #Twittersphere: User Growth Slows Down To 3.5% Per Month
Jan 19, 2010
<img src="http://tctechcrunch.files.wordpress.com/2010/01/twitter-user-growth-215x133.png" width="215" height="133" /> Marketing software startup <a href="http://www.hubspot.com/">HubSpot</a> has put