http://www.eastbayexpress.com/oakland/yelp-and-the-business-...
""" The phone calls came almost daily. It started to get creepy.
"Hi, this is Mike from Yelp," the voice would say. "You've had three hundred visitors to your site this month. You've had a really good response. But you have a few bad ones at the top. I could do something about those."
"""