Mechanical Turks in slums

I am interested in the potential of boosting wages in slums by setting up IT centres so that locals can work via Mechanical Turk, and similar services. Although these jobs pay below UK minimum wage, it would be multiples of a typical slum-dweller’s income. It appears that this is not a new idea. Some firms have gone a stage further and distributed this work by mobile phone, broadening reach. However the benefit of a single location is that you don’t rely on the worker having a phone, and that you could combine work with education and IT literacy classes.