[seanwilson]

Have you tried Google or asking people you know for recommendations? Most of my clients find me via my personal website that way.

I wouldn't add myself to any of the sites you mentioned. I don't want to be listed somewhere as an interchangeable commodity, don't want an intermediary getting in the way of payment and communications, and don't want to be somewhere that attracts clients looking for the cheapest option. I can't believe some of these platforms allow screen capture software that let clients spy on the contractor either.