Fuck yeah, I've made a few bucks on the side with some of the gigs (under "computer"). A few hundred bucks here and there for what amounts to be a 4 or 5 hour website or a logo. I love that shit because it gives me a chance to experiment on random projects (whereas everything at work is pretty standardized). Edited to add: not just gigs in Louisiana, either. There are a lot of online gigs that don't require that you live in whatever state, you just have to make sure you get paid.
Bought plenty of shit off of it, but my favorite was when my wife asked me to sell a Chevy Cavalier that she had acquired from an estate. I'd never sold a damned thing in my life, so I made a really tight non-negotiable-priced ad with a ton of photos pointing out every single ding, scuff and crack on it. I wound up getting two dozen legit responses within two hours of posting it, and a ton more that night. We wound up selling it the next day to the first dude that responded. I felt the power of being a master car salesman. ALWAYS BE CLOSING