I've just released my first PSP utility, BROWSER 2 PSP. The application takes any Firefox or Internet Explorer bookmarks / favorites file and converts it for use on the PSP. You can even edit the file inside the application - add, edit, and remove bookmarks easily.
You can download it at http://www.HackingPSP.com
Please let me know if you have any suggestions for future versions!
Hacking the PSP (due out this holiday season from Wiley's ExtremeTech series! w00t!)
Also Author of Geek My Ride and Co-Author of Hacking Digital Cameras