The security firm Barracuda Labs says only 21% of Twitter users are active users.
Only 26% of Twitter users had 10 followers or more by December 2009 and a majority of Twitter users, 51%, were following less than five people.
In terms of tweets, the report estimates that 34% of Twitter users hadn’t tweeted even once, while a whopping 73% of Twitter’s users tweeted less than 10 times. That means nearly all of the tweets on the social network were coming from about one-fourth of the userbase.
Read more at Mashable or at CNN.
