I'd be happy to answer this question for you, but I need a little more clarification on what you're looking for. Are you wanting to leave a review on a professionals account who's worked for you? Or are you looking to add a review button to your personal business page because you are a Thumbtack professional? I look forward to your response!

Thumbtack doesn't care. Service guy did over 40,000 in damage to my home and is criminally charged and criminal history for fraud in multiple states. Thumbtack, on today's site, still advertises him as licensed, insured, bonded. They were sent records of the criminal cases. They don't care if the contractor pays them off.