From the websites you posted I know oDesk which is pretty famous and known in addition to Freelancer.com & eLance and all of them are basically freelance websites you could hire there people to do jobs for you or simply work as Employee , Note that those website Do NOT pay using Bitcoin (Skrill , Paypal etc ..) easiest jobs you could do if you don't know Programming/Coding , Designing etc .. is Writing or being a Translator if you know more languages .
Something else you could do to earn Bitcoin is enrolling in Signature compaigns and get paid (but that's not daily, that's at the end of each month or weekly depends on the compaign you enrolled in) . Good luck mate
~ Madness
