If you're wanting a marketing version of rent-a-coder, I think that's a great idea. I've never heard of one myself, but I have several friends who are talented artists, etc.., but just don't have the where-with-all to get a decent job marketing. They would totally go for a freelance network if there was one, and so would hundreds of others, I'm sure. This is a great start-up idea, IMO. "rent-a-marketer"