Typically networking. I spent some time working at a reputable firm in this space as well. One way to do this is to show some chops on the competition sites an

Typically networking. I spent some time working at a reputable firm in this space as well. One way to do this is to show some chops on the competition sites and then move to one of the organized freelance firms like Spearbit or yAudit. In doing all of these things you'll inevitably meet more people, build a specialty, get some reputation, etc.