There must be far more than can ever be used.
ETA. Not sure when this turned into a rant but, people who post in icon communities for say, a specfic character, and provide a link to their journal for one bloody icon in a sea of Alias/Farscape/Donkey Kong crap - you piss me off!
ETA2 Shit, forgotten what this was. I'll get back...
ETA3 Oh yeah. Not sure why this thing bothers me so much, when I make 99% of my icons myself anyway, but it does. So there.