I'm not necessarily sure that there are any major secrets revealed in this
post over at the Consumerist but they do validate some urban legends about the world of retail sales. The list covers things like how reserving an item really doesn't mean that you'll get a game when it ships, how membership cards are something of a rip-off, and why used games are a major source of profit for retail game stores. There are six other items and it's a nice quick read.