I remind you that Sony's been the most tolerant of anyone about homebrew - they sold official amateur devkits for the PS1 and PS2 and have announced that the PS3 will also run Linux for homebrew use. The PSP's a bit different, and yet nobody wishes to respect them in the one case where they don't (yet?) have such a kit available. Anyway, PSP homebrew so far has been just a smokescreen for HK-funded piracy, just like usual.