• Silicon Alley Insider, Tuesday, June 2, 2009 12:30 PM

A study from the Harvard Business Review finds that 10% of Twitter users account for more than 90% of the messages sent over the microblogging service. Silicon Alley Insider's Nicholas Carlson points out that that's an even more lopsided ratio than Wikipedia, where 15% of the editors account for 90% of all edits.

Carlson says the HBR study implies that Twitter is "more of a one-way, one-to-many publishing service than a two-way, peer-to-peer communication network." Indeed, according to the study, half of all Twitter users tweet less than once every 74 days, and "the median number of lifetime tweets per user is one."

Other interesting statistics from the HBR report show that men have 15% more followers than women; the average man is almost two times more likely to follow another man than a woman; and the average woman is 25% more likely to follow a man than a woman.

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