I think this web site has a good idea of how to do business, but they are focused on their behalf and the end user which most of the times are curiosities they have about prices from businesses and individuals who provide services, the problem is when businesses pay tumbtack, tumbtack informs the client and open communication between the two, if the client decides for one company, others end up paying without results and I think it's not fair, I think thumbtack should charge a higher fee only to those who wins the contract and charge little or no charge who gains nothing but notifications to push them to buy credits.