Yelp accused of extortion in Chicago: http://chicago.cbslocal.com/2012/02/27/2-investigators-businesses-yelping-about-review-driven-web-site/ http://chicago.cb

Yelp accused of extortion in Chicago: http://chicago.cbslocal.com/2012/02/27/2-investigators-businesses-yelping-about-review-driven-web-site/ http://chicago.cbslocal.com/2012/02/27/2-investigators-busin...