[nawitus]

Who are "they"? Amazon shouldn't care if the turks are humans or bots, they'll make the same dollar in any case. The people who create tasks for turks shouldn't care either: they just want stuff done.

The point of MT is that it's a market for jobs that cannot be easily automated. If someone can automate the task then so be it, it doesn't matter.

The point of MT is not a market place for "tasks that can only be done by humans", it's a market place for "tasks that can't be automated easily, therefore everyone and everything should have an opportunity to complete the task by any means what-so-ever. if you can only complete tasks on drugs then so be it. if you can only complete tasks by writing a bot so be it.". The seller just wants task to be completed cheaply.

[jiggy2011]

The advantage of listing a job on MT vs finding a program to run is that you know it is at least reviewed by a human being who cares somewhat about their reputation within the system.

Once that guarantee goes away you affect the value of all transactions within the market. What is commonly known as a "Lemon market effect".