This website lets you easily list your service for free: babysitter, plumber, etc.
The registration process is as simple as it gets, just 4-5 fields and you're done! No credit card or anything like that is asked for. They are basically asking you for your name (not necessarily real one), the location (just a zip code) and what you are doing. Then they include your service in their categorized listing. Service consumers could find you by zip code or by category.
LocalTinkers.com is a startup based in Salt Lake City, UT. The website is being improved constantly.