Way back in the day, if you wanted to know if a piece of software was safe, reliable, or usable before you opened the package, you were out of luck. Once you rip that shrink wrap, you're stuck with it. The app markets of today are, by comparison, a breath of fresh air. A litany of user reviews let you know up front if a piece of software is crap or not before you download. Unfortunately, sometimes developers, like Noosoft Games, abuse this system by, as an example, using the Mechanical Turk system from Amazon to pay for 5-star reviews.
What Is Mechanical Turk
For the uninitiated, here's a little background: Amazon's Mechanical Turk system (named after an 18th century chess-playing automaton) is a platform for businesses to farm out minor, tedious tasks (called HITs) without hiring full-time employees, and lets users perform those small tasks for a pittance.