If you look at the Y scale of their graph, It should be clear that the middle mass of tweeters are spammers. The lowest hashmark on their scale is 200,000 tweet

If you look at the Y scale of their graph, It should be clear that the middle mass of tweeters are spammers. The lowest hashmark on their scale is 200,000 tweets. http://mediamemo.allthingsd.com/files/2010/03/twittering-distribution.png http://mediamemo.allthingsd.com/files/2010/03/twittering-dis... 200,000 tweets would be roughly 5 tweets every hour since Twitter was created. There is a mass of such spammers in the 1,000 followers range because 1,000 seems to be the order of magnitude that accounts can get to by semi-automated following and unfollowing.