Yesterday Twitter proudly announced that it has 100 million active users on the network. This is a pretty healthy statistic, and certainly a lot higher than the touted 21 million active users that was doing the rounds earlier this year.

Twitter, like its peers in the social space, defines an active user as somebody who logs on just once per month. But what about all users, including those who are less active than this? A couple of weeks back I estimated that Twitter’s total membership tally (all registered profiles) should be around the 254 million mark. From this we can deduce that approximately 40 percent of Twitter’s total users are active.

So how does that compare to the other major social networks?

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