Sorry if this has been asked before, but i am a lurker in this community and have been for years =P.
Anyway, I was looking at the Super Nintendo emulator for the GBA, the one with the super nintendo controller modification. And i thought, cant someone code something similar for the PSP? Why not use a USB converter to plug a keyboard into the top of the PSP and make some software to be able to use it?
Just an idea.