I'd check US employment law first -- here in the UK, I had my first proper startup attempt holed by discovering UK employment legislation that stipulates you can't charge a worker for finding them work - you can only charge the person who ends up hiring them. There are nuances and exceptions to this, such as when someone's contracting via a corp/company etc, but it definitely applies to individuals freelancing, etc. Hope that helps.
That's interesting, there are number of website that have success doing this, Elance, Sortfolio, to name a few. It may be just the way the service is structured, i.e. it's just a listing where employers can find you.
I'd check US employment law first -- here in the UK, I had my first proper startup attempt holed by discovering UK employment legislation that stipulates you can't charge a worker for finding them work - you can only charge the person who ends up hiring them. There are nuances and exceptions to this, such as when someone's contracting via a corp/company etc, but it definitely applies to individuals freelancing, etc. Hope that helps.