Personally, I HATE Turk. It used to be you could make an 'okay' income of a dollar or two a day doing stuff that wasn't too bad. Now? (Last time I looked.) You're lucky to earn a couple pennies for an hour's worth of work. For the kind of money Turk places offer, I can just pool mine. A single computer with a lower-end ATI graphics card can earn ~$0.05-0.07/day, which isn't an awful lot, but it's more than I've been able to earn on Amazon Turk in a long time.

If you could somehow guarantee that tasks would pay out at at least ~$0.50USD/hr., I'd be more interested.