Cool!
(Even if I don't own a PSP myself.)
Just as with the WAP variant, the forum defaults to a really basic version lacking images and the like, an archive version according to the URL.
(Googling gets me such versions a lot for some reason.)
I can understand why this is done, but couldn't a simple piece of CSS make that basic version look as good as the rest of the site?
Right now there's a white background, but if that's changed to the same... (can I call that?) blue that is used on the main site, and if the links are made to use BU's regular link colour, it would be even nicer.
Maybe even re-attach the PSP-version header at the top using the PHP, although that'll take some more work to work/look right I'm sure.
Anyway, congrats on becoming more portable!