I have started making a new flash application for the PSP.
Here is what it does:
Accesses the bookmark file on the PSP that is created in the web browser. Then the flash file scans through the links and finds the ones that are flash files (.swf) and then builds up a row of buttons that will take you to the flash file when they are clicked.

I am not sure how useful this is but I wanted a challenge. here is a beta version that works on my firmware 3.50 PSP. It does not use homebrew.

Known issues:
-It looks rubbish, this is a first release though.
-It will probably take ages to load if you have loads of bookmarks possibly give an error saying there is a script making flash run slowly.
-If you have a lot of links then the buttons will go off the screen (and you wont be able to see them).
-May not work with other firmwares I can not check.

If you want to give it a go download it here. This will give a blank screen on PC as it wont be able to load the bookmark file.