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The micro-blogging service offered by Twitter is said to have seen a 131% growth in unique users during the month of March, according to a comScore report released Wednesday. Effectively doubling its user base, the company signed up more than 5 million new users, peaking at 9.3 million by the end of last month.

Shedding some light on the surge, the report theorized that Twitter has benefited heavily from an increasing amount of media coverage; which is undeniable, with the recent attention surrounding the race to 1 million followers between Ashton Kutcher and CNN.

The report also showed that Twitter’s growth is unexpectedly driven by an older demographic. Showing that while 18-24 year-olds are on average 12% less likely to visit Twitter, 45-54 year-olds are the most likely to use the service at 36% above average, followed by those in the 25-34 year-range, who are 30% more likely.