In the past week there have been multiple "news" reports that psych researchers are in a panic over the possibility that "bots" are doing psych surveys on mturk. They all basically repeat the same stuff, and you can find them on Google News by searching for mturk. So far as I can tell, there is basically no original reporting involved and they all seem to derive from some observations by the guy (or girl, I guess from the name) who posted this (https://www.reddit.com/r/mturk/comments/95yy96/data_contamination/) on reddit, and apparently much the same stuff on Facebook. tl;dr: Researchers need to PUT IN THE WORK to block bots. tl;dr: Researchers need to PUT IN THE WORK to eliminate bad data. Note to researchers: Jeff Bezos doesn't care about you any more than he cares about us. Accept it and life will get better.