Obama has 19 million Twitter followers -- 13 million are fake

The New York Times reports:

It may be the worst-kept secret in the Twittersphere. That friend who brags about having 1,000, even 100,000 Twitter followers may not have earned them through hard work and social networking; he may have simply bought them on the black market.

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The practice is surprisingly easy. A Google search for “buy Twitter followers” turns up dozens of Web sites like USocial.net, InterTwitter.com, and FanMeNow.com that sell Twitter followers by the thousands (and often Facebook likes and YouTube views). At BuyTwitterFollow.com, for example, users simply enter their Twitter handle and credit card number and, with a few clicks, see the ranks of their followers swell in three to four days.

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The practice has become so widespread that StatusPeople, a social media management company in London, released a Web tool last month called the Fake Follower Check that it says can ascertain how many fake followers you and your friends have.

The tool examines Twitter relationships, said Rob Waller, a founder of StatusPeople. “Fake accounts tend to follow a lot of people but have few followers,” he said. “We then combine that with a few other metrics to confirm the account is fake.”

If accurate, the number of fake followers out there is surprising. According to the StatusPeople tool, 71 percent of Lady Gaga’s nearly 29 million followers are “fake” or “inactive.” So are 70 percent of President Obama’s nearly 19 million followers.