For me, it's almost all referrals from past clients or peers. I realize that doesn't really answer your question, though. Sometimes I check http://www.artypaper

For me, it's almost all referrals from past clients or peers. I realize that doesn't really answer your question, though. Sometimes I check http://www.artypapers.com/jobpile/ http://www.artypapers.com/jobpile/ and http://joblighted.com/ http://joblighted.com/. They aggregate a bunch of job boards and have more than a few freelance gigs mixed in. I've gotten a job or two and a few interviews through them.