Games (for me) on PSN offer such a high quality at such a low price that, when you read about them on GB or something, its hard to pass up. they are so easy just to buy even on an impulse buy, or if you want something to distract you for a certain time. most of them are such easy drop-in-drop-out games that i end up playing some of them more than full retail games. As someone who can be very cheap about games, buying four of these seems like a better deal than a full disk game.

Damn those impulse buys! They're so cheap that it's really easy to end up buying a bunch and spending too much. I don't know if that ever happens to you, but it's happened to me many times with Steam.