Yeah. As a high schooler I just wanted to use AIM on it, but all the web-based AIM clients required Flash at the time, which wasn't supported in the PSP browser.

So I ended up hacking together a site called AIMonPSP with PHP and MySQL that did all the AIM communication on the server instead of client-side. Made a decent amount of money (for a high schooler) on AdSense banners, and learned a lot about software design the hard way.