Still one of the best ways to play PS1 games on the go these days :D : r/PSP
Is Sony finally positioning the PSP to succeed? More PS1 games on PSN, non-PlayStation games on the PSN, free ponies, etc | TechCrunch
Joystiq Guide: PSone downloads hit the PSP (by way of the PS3) | Engadget
Price range for PS1 games on PSP announced – Destructoid
Run Any PS1 Game On A PSP - Hacked Emulator Action! - RetroGaming with Racketboy
3 great PSP/PS1 games made even better when played on the PSVita via Adrenaline - A look at some older games to play this holiday season on your trusty portable! - Wololo.net
PSP now 721% more fun than before! | Ramblings of DarkMirage
PSX2PSP v1.4.2: How to Convert PSX games to PSP - CDRomance