Last week we looked at some research from Twitter account tracker Twopcharts, which stated that Twitter had passed the 300 million user mark.
Twopcharts made this calculation by observing that all Twitter profiles are registered sequentially, starting with the first way back in March 2006, and by monitoring registration dates from Twitter accounts and their IDs, the 300 million number seemed solid.
However, this clashes with user stats released from Twitter themselves, who pegged their network at 200 million profiles in February – a number they’re clinging on to in their business pages. 100 million new users in three months? Not bloody likely.
So, what gives? How many users does Twitter actually have, how many of those are actively using the service and, more importantly, what the heck is an active Twitter user, anyway?