I was over at Queers United a few minutes ago and ran across this term. I like it. It goes into greater depth of meaning than just "bi". However, for the time being, I'll probably continue to use "bi" for simplicity's sake... or until there's a good bit of symbolism and flags and keychains and shirts... or anything else that would identify "Pan-Sexual".
Hmmm... our own flag... any ideas?