I highly suggest any small business owner to give it a try and see what new leads it might bring. The sign-up process is free and you don't pay a dime until you provide a quote to a potential client. At that point, the cost is extremely reasonable. Also, clients may contact you directly, in which case, the lead is also free!
Take a look at my Thumbtack profile (it's a work in progress!) and if you have any questions, please feel free to contact me about my experience using it!