I've hired on oDesk and Elance and agree that managing remote workers is a skill and you need to be on the look out for scammers. I do all my jobs on Elance be

I've hired on oDesk and Elance and agree that managing remote workers is a skill and you need to be on the look out for scammers. I do all my jobs on Elance because they have a good project based setup where you only pay when a milestone is completed. I hire all my freelancers on a project basis 1st and then shift them to hourly if they are reliable. I've also found that Elance to have more US based freelancers to choose from. One thing that bugs me is that none of them have good apps - you would think they would figure that out!