Lets face it those memory stick duos are way to expenisive for the amount of space they hold.. I wish i was a programmer to code drivers or modify PSP firmware to read usb drives, but several recent hacks for the system has made it more evident that the psp can do many things, for explain booting games from the MemSticks watching videos and browser hacks. All we need now is storage space for all of these things. I have seen mini usb drives with 20+ gigs of storage smaller than floppy disc, don't need external power sources and cheaper than them Duo's. If somebody or some group can code drivers or make some homebrewed usb hd programs for the psp that would be great, or even a USB to MS duo adapter of some sort. Think of the all the movies, music software or even backup games. All we need is HD advance for the psp.