RentACoder looks nicer in that aspect:
To pay for this service, Rent a Coder charges coders a 15% Rent a Coder Fee on the profit from work and questions. So if you don't find work...we don't get paid.
Also the RentACoder website looks far more informative and helpfull. I found an answer to my question riight away, while on elance.com I needed to actually try to bid to be sure how it would work and what it would cost. Oh, the info is there too. But buried and confusing...
similar entries (vs):
similar entries (cg):no similar entries (yet?)