Since most of you purchase used games, listen up! A recent lawsuit against GameStop alleges it deceptively misleads customers purchasing used games. Often, used games are priced as little as $5 below the price of an untouched game. The problem is that if your game contains additional content that has to be downloaded, you can only download it once for free. Subsequent downloads can cost as much as $15, so the game will end up costing you more.
The lawsuit aims to ensure GameStop (and presumably other resellers) discloses that additional online content is not available free for used games, even if the game's original packaging says it is. Most games work without the additional content, but when you're purchasing used, be sure to keep this in mind.
Source: Flickr User Moe_'s