Twitter Number of Users

TwitDir has identified until now (October 10, 2007) more than 500,000 Twitter users. TwitDir is only capable of detecting Twitter users with a public profile, meaning that 500,000 is an underestimation of the total number of Twitter users.


In July 2007 I reported that the number of Twitter users detected by Twitdir grew by 2,000 new accounts per day. Looking at the numbers reported by Twitdir recently I have the impression that this growth has slowed down to 1,500 new users per day.