He means `Hacking`, you attack its bios of the copy protection crap so you can play everything on it.
For instance, mine now has the latest Unofficial firmware (software) (bit like the Amiga 500 had 1.2 1.3 ect)
So now my PSP can take an 8 gig memory card in the ass instead of just a 2 gig.
It also plays...
4.Atari lynx/2600 etc
5.Sony playstation 1
7.All arcade games
Plus all homebrew and copys. Msn messenger, radio, allsorts.
Easy to hack and if you get our friend here to hack it, it will be worth more dough
BTW, if you want any games etc i have loads of stuff for these