For years, businesses have accused Yelp of running an extortion racket. If companies refused to pay for ads, Yelp would allegedly pull down some of their positive reviews (and wreck sales) until they gave in. Well, those accusations don't appear to hold much legal water; an appeals court has upheld a California judge's dismissal of a 2010 class action lawsuit that claimed Yelp was committing civil extortion. Needless to say, the recommendation service is ecstatic. It cites the ruling as proof that the shops simply had an "axe to grind" and were either trying to "draw attention away" from bad reviews or else prop up review manipulation schemes.