BOSTON (Reuters) - A tiny fraction of those who use the fast-growing social network phenomenon Twitter generate nearly all the content, a Harvard Business School study shows. 
That makes it hard for companies to use the micro-blogging site as an accurate gauge of public opinion.
Twitter Inc. is a social networking website in which users post messages of 140 characters or less (known as "tweets") that can be viewed by other users who elect to follow them.
The Harvard study examined public entries of a randomly selected group of 300,000 Twitter users. The researchers studied in May 2009 the content created in the lifetime of the users' Twitter accounts.
It found that 10 percent of Twitter users generated more than 90 percent of the content, said Mikolaj Jan Piskorski, who led the research. More than half of all Twitter users post messages on the site less than once every 74 days. More>>
That makes it hard for companies to use the micro-blogging site as an accurate gauge of public opinion.Twitter Inc. is a social networking website in which users post messages of 140 characters or less (known as "tweets") that can be viewed by other users who elect to follow them.
The Harvard study examined public entries of a randomly selected group of 300,000 Twitter users. The researchers studied in May 2009 the content created in the lifetime of the users' Twitter accounts.
It found that 10 percent of Twitter users generated more than 90 percent of the content, said Mikolaj Jan Piskorski, who led the research. More than half of all Twitter users post messages on the site less than once every 74 days. More>>
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