I'm not a fan of the term "freelance" -- to me -- implies a certain desperation, inexperience and youth. Having been in the graphic design realm for close to 10 years I don't identify with any of the perceptions above. The days of boutiques and large, multi-function studios (though still around) are shrinking; and the new paradigm is to find collaborative partners to outsource work. The opportunities for companies of one to find meaningful, worthwhile, professional work are growing daily. Below are various websites that pool those opportunities for you to easily browse and find new work (in no particular order).

• Guru Founded in 2000, Guru is the old man on the block with an enormous amount of job/contract categories.
• Coloflot Design Jobs Well defined categories, up-to-date job postings.
• Freelance Switch All around amazing resource for business of one firms -- jobs plus a blog with great information and resources
• Most Hired Pools various sites posting (a few of them that I list here)
• Jobs and Gigs Not a plethora of job postings, focused on programming and design.
• Krop
• Authentic Jobs
• E-Lance