comScore stats on mobile Twitter usage

A belated look at a recent report from comScore which shows Twitter is the fastest growing social network on mobile, with growth of 347% since 2009.

The number of users in January 2010 reached 4.7 million – compared to just over 1 million in January 2009, giving a 4.47 multiple increase. Twitter’s 347% growth compares with Facebooks 112% (But Facebook still rules with 25 million mobile users), and Myspace declining 7%.

But to be 1/5th of Facebooks size and growing 3 times as quickly shows Twitter is looking even more promising on mobile than on the fixed internet.

A good clue to Twitter’s growth rates

Although comScore only measures visits to Twitter.com, and more than half of Twitter users use clients and apps, it does provide a clue to Twitter’s growth rates.

In June it gained around 7 million new visitors, hitting 44.5 million unique global visitors, up 19 per cent from May 2009, and now making it the 52nd biggest site in the world (and with a 55 per cent international audience).

Techcrunch points to the Iran election as a contributor to the growth, while Mark Evans over at Twitterati somewhat confusingly uses comScore and Compete figures to calculate a 50-50 U.S and International split.

For the record, the biggest properties measured by comScore are Google sites, Microsoft sites, Yahoo sites, Facebook and Wikimedia Foundation sites.