This year, 31.8 million US internet users of any age will access Twitter at least monthly, up from just over 25 million in 2011 and rising to nearly 40 million by 2014. For the first time, in 2012, that number will represent more than 20% of social network users and more than 10% of the total US population—still not a very great share considering the amount of media attention the microblogging service enjoys, but a growing base of users. Read the rest at eMarketer.
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