Well, I've already 'appropriated' all the ones I like (at least the ones that don't show up in every
build of phpBB) and threw them up in a Photobucket album, along with other 'rare' ones that I've harvested from other fora:empath's smiley warehouse
PB even will give you BBcode to copy-pasta into your posts.
I go to this bookmarked page so much, Firfox has it show up on that 'menu' of sites when you open a new tab.
...and if anyone wants to make use of it themselves, they're totally free to do so.