I can see some appeal to making a miniscule amount of money in my spare time on Mechanical Turk. I mean, I already spend my spare time doing pointless tasks such as solving crossword puzzles and commenting on things. I would see it as a game where the goal is to try and make as much money as possible with as little work. I can also see that unemployed people might enjoy it just as a way of feeling like they're doing…
The only ones that seemed appealing on the surface were these audio transcriptions. I type over 100wpm and 9 minutes of audio took me over an hour to transcribe. I got like $2, and never even bothered withdrawing it.
If any individual on Mechanical Turk is averaging even 1/3rd federal minimum wage, I'd be shocked.
Since most of the tasks pay even far worse than transcription, and there's a significant unpaid time investment acquiring the tasks and getting them approved, and most people probably try a few tasks before leaving and never even ask for a check, I'd guess the average payout for people working on Mechanical Turk is much less than a dollar per hour.
I've always wondered how it's legal.