If you want a co-founder -- someone to take half of the equity in a startup and take the plunge with you -- hiring a freelancer is a terrible idea. They're not going to invest themselves in the idea the way you would.

If you just want someone to take some of the coding pressure off of you, sure, but I'd still advise against it. Better to hang out here or on IRC and find someone who actually likes the ideas and would be interested in working on them. Saves you money, and you'll get better output in the end anyway.