I found a job -- and a new career.
I was working as an editor at a metro newspaper, doing editing half the day and programming the other half. I saw a startup's job ad in a "Who's Hiring" thread and figured I'd check them out. I got hired soon after, and I've been with them for the past seven years!
I've also gotten decent exposure, and some helpful feedback, for some of my side projects that I've posted over the years.
And every once in a while there's a good opportunity to plug one of my books in a comment thread. By the way, have I mentioned what's hitting bookstores this April ... ?