Like oDesk?
https://www.odesk.com/I find the concept really interesting, and could apply very well to Bitcoin. There's only one problem though...one MEGA problem.
I've tried oDesk before, and found the concept interesting. The thing is, there's people in poorer country (like Brazil, Indonesia, etc) who offer their services at a really lower price than US/Canadians. I mean, they work at like 3/4$ hour, more than half the minimum wage for the same PHP/translation/whatever job you want to do.
It's an interesting opportunity for those people, but for us, it's really shitty. I'll make double money flipping burgers at the nearest McDonald than doing those jobs. Sure, it's not everybody who wants to deal with people from the other side of the world, but still, it makes a lot of pressure downward for the salary.
Take that into consideration if you want to start your project.