Craigslist is a crap shoot. Angie's List is good, but charges a fee. Now there's Workstir, an online classified site with a user-friendly design. As a consumer, you simply post your need. When a matching service provider is found, you get an email. You can then go to the provider's profile page to see a "resume" of sorts, complete with ratings and feedback from other consumers, then decide if you want to hire that individual.
As a service provider, you can browse postings from consumers to find a match, then make your bid to win the job. You will also get an email when jobs are posted in your area or can sign up for a daily email with listings. You also fill out your profile for consumers to see.
As with any of these types of sites, it all depends on traffic and participation. The idea is great - as a consumer, the classified listings come to you. As a service provider, you can find people actively seeking your services. The problem is that sites like Craigslist and Angie's list are prolific, while Workstir is barely a blip on the radar. However, if you're a local business or can provide a service remotely, it's never a bad idea to spread yourself around the Web. And if it's as painless as they suggest, getting the occasional email about work needed in your area in addition to your regular classified trolling sounds like a win-win.