Finally, Yelps extortion tactics are coming back to haunt the company.  A national class action lawsuit has been filed against YELP alleging that the company engages in extortion of business by manipulating its viewers' reviews in exchange for advertising dollars from the company's reviewed.  Refuse to play the YELP game and bad reviews suddenly appear and good reviews curiously disappear.  YELP has lost all credibility and will likely not survive.