I have tried Thumbtack and it makes the process to post an ad on Craigslist very easy. I got my first referral last week for a possible job. If you want to learn more you can click on this referral link. CL is pretty good for jobs, but this allows you to track and add a more professional look to your advertisement.
So it got the majority of the list about what it knows about one person. What does it know about you? I am curious so I checked out the link in the article. It was incorrect what it thought it knew about me but it gave me the chance to delete it and opt-out. I did. Go check out the article.