Only if they have the hardware and cheap, reliable internet connections. If this is the case, then they are usually fairly literate and generally pursue option

Only if they have the hardware and cheap, reliable internet connections. If this is the case, then they are usually fairly literate and generally pursue options that provide a higher return e.g. online training/learning/certification to enhance job prospects, job-hunting, blogging supported by AdSense/adverts, ecommerce/eBay, etc., or in the worst cases spamming/scamming. Those that would truly benefit from a few dollars a day are the ones least likely to be independent Turkers. The best case sceanario for them in this respect would be to work in a Turk farm (where a host company provides the infrastructure), but then they would only get a fraction of that dollar they earn. However, at least they would be indoors doing non-manual labour.