I've had problems with oDesk, and what they say they do to protect employers as part of their marketing isn't actually how they act in practice when issues aris

I've had problems with oDesk, and what they say they do to protect employers as part of their marketing isn't actually how they act in practice when issues arise. For example, blackmail by a contractor to them isn't considered a high risk activity, and therefore they won't remove the contractor for it..