I wrote an honest, factual negative review of a vendor on Thumbtack. I had documents, pictutex, and receipts for everything. The vendor disputed it. Within 48 hours I had the provide proof of hiring the vendor. A hassle, but I did it. The review was removed for 2 weeks while Thumbtack "investigated." On the 13th day the review was disallowed by Thumbtack. Buyer beware. Don't trust reviews on Thumbtack.