It's a friend request with benefits - but it isn't for free.
New York hookers are flocking to Facebook to advertise their services, a Columbia University sociologist says.
After studying the habits of 290 sex workers, Sudhir Venkatesh found that 83% rely on Facebook to lure johns.
"I estimate that by the end of 2011, Facebook will be the leading online recruitment space," Venkatesh wrote in the February issue of Wired magazine.
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