http://mashable.com/2009/06/10/twitter-users-inactive/

Are Twitter Users Inactive? Depends on How You Look at It. Hubspot’s second State of the Twittersphere report is out, and once again, a cursory glance reveals that a lot of Twitter users aren’t very active. However, it all depends on how exactly you define “inactive;” a look from a different perspective shows that less than 10% of Twitter users aren’t really using the service at all.

TweetMeme Community Contributor posted about 2 years ago