This concerns me because I can see it reaching an even bigger scale across all markets, especially in light of these new "reputation monitor" rackets where comp

This concerns me because I can see it reaching an even bigger scale across all markets, especially in light of these new "reputation monitor" rackets where companies try to improve small b/m reputation online in places like Yelp & Urban Spoon. Right now, there isn't any easy way to defend against it.