I'd argue the solution to trust is appropriately matching work to reliable workers for whom the work is fairly paid, not simply raw repetition. At $3 an hour,

I'd argue the solution to trust is appropriately matching work to reliable workers for whom the work is fairly paid, not simply raw repetition. At $3 an hour, someone in (say) Lithuania would be highly motivated to do the work right, even if someone in the US wouldn't particularly care. This is the approach we took at MobileWorks, and it works fairly well.