Here’s another answer to the eternal “how do you find web work?” question: Flexjobs, which claims to be the “world’s largest telecommuting job site.” They have some hundreds of job listings online, and every single one of them is for telecommuters. They accomplish this by bringing together listings from other sites, as well as letting employers post directly. A good number of the listings look like professional positions, as opposed to the run of home-based-work opportunities you’ll hit elsewhere (though they carry some of those too).
Flexjobs isn’t free to use, though: if you want to see anything beyond job title, employer, and date posted, you’ll need to register at $14.95 per month or $49.95 per year. If you’re doing a serious job search, that could be worth it in saved time. Even without registering, you can get a sense of the market, and browse through the selection of article links to help you get started with telecommuting.