It has been years, but when I placed projects on mturk I had them listed to be completed 2-3 times each. This was the only sane way to filter out input by users

It has been years, but when I placed projects on mturk I had them listed to be completed 2-3 times each. This was the only sane way to filter out input by users which was completely wrong. The positive thing was once you identified someone submitting non-sense you ban them from the project and pay nothing. Americans are not ready for what is going to happen to the labor market when minimum wage goes to $15 an hour.