Uberjack posted this news:

It looks like very recently, all the non-recent (read: excluding Fuse PSP) PSP emulators have exceeded 1000 downloads. fMSX is the most downloaded emulator at over 5000, SMS Plus is second with almost 3000. Of course, this excludes the (estimated) thousands and thousands of downloads from PSP sites that host their own files. And to celebrate, I offer… thanks!

http://0xff.akop.org/2008/07/23/milestone/

Uberjack has also released a faQ here --> http://0xff.akop.org/faq/