Coolio Using your psp as a mass storage for your ps2
its prettty straight foward you can use your psp as a usb mass storage device with your ps2, all you have to do is plug it into your ps2 and do usb mass storage in the xmb and it works
whats so good about this is that you can boot snes games that you use in your psp on the ps2!!!! so handy isnt it? also you dont need a usb stick every damn time when you want to transfer a homebrew file or if you just need a mass storage solution
I also was able to boot a ps2 ISO off the psp too! (but its just ridiculous seeing as it took up the WHOLE memstick)
P.S. I dont care if you already found this out