rogerd - 3:38 pm on May 18, 2011 (gmt 0)
Yelp has had a checkered past in this area IMO, and has blamed extortion claims on overzealous sales people going beyond corporate policies. Smacks of of ye olde "the intern did it!" defense.
Still, I think UGC site operators like many of us here at WebmasterWorld can appreciate a somewhat higher barrier to frivolous lawsuits.