Some enterprising gamer has figured out how to boot PS2 backups on the Playstation 3, assuming that one is willing to dismantle the PS3 and cut a hole in the top cover. Basically, the swap trick is an implementation of an existing hack used on the older Playstation 2 machines. The mod is interesting mainly because it shows off how deep the hardware compatibility for PS2 games goes, but if one really wanted to play back up Playstation 2 software, it probably makes a little more sense to pick up a cheap slimline PS2 and a Swap Magic disc rather than voiding the warrantee and risking the health of a $500 to $600 game console.