So inform other people not to trust Yelp because the ratings are bought, provide alternatives (I usually use a mix of Foursquare / Trip Advisor / Google Reviews

So inform other people not to trust Yelp because the ratings are bought, provide alternatives (I usually use a mix of Foursquare / Trip Advisor / Google Reviews) and tell them to tell their friends not to use Yelp because they are fraudulent. Most techies with any news awareness know not to trust Yelp, that right there is proof it works. It is just the onus of the informed to educate those not.