Look, while, sure, it's great to get games at a cheap price, and while stuff like GreenManGaming and HumbleBundle might not be as cheap, we know we can actually verify them, and stuff like CDKeys, we just assume that it is safe. Because they were mass bought from third-world/underdeveloped countries, who knows what might have gone through during the process.
Okay? I don't want this to become a full-blown argument, just how stuff like CDKeys aren't always the best, and better to get them from trusted and verified sources.