True, but we have our own version of "three strikes" via Yelp, Angie's List etc... Also, I hang out on a lot of home improvement forums where cleaners, contract

True, but we have our own version of "three strikes" via Yelp, Angie's List etc... Also, I hang out on a lot of home improvement forums where cleaners, contractors and customers frequently trade information and recommendations about each other. For all the hoopla about Facebook et al. the old-fashioned forums are still a hotbed of activity for services like this.