It can be a crapshoot whenever you hire someone you don't know. The first and most important consideration is this: Is this person trustworthy? And let's face it -- we've all been shafted by companies Big and small (who take your money but offer bupkis when it comes to good service). So, you can bet your bottom dollar that I was relieved when I found and used Thumbtack to locate/hire Paul: From his first email to the finished job -- no hassles, no worries, no weirdness.
See -- I needed an air conditioner installed (RUSH ) to beat the ridiculous heat. Paul was reliable (showed up on time), fast (did it in less than an hour), reasonably priced (other vendors wanted double) and professional. Plus, he was clear and responsive with communication throughout the job -- always good. Color me a happy camper. And I'd definitely recommend him.