I agree with nathaniel. I think it would be weird to coauthor someone on teh basis of their scanned face. Some of us are ugly :(
But yea it should just be reserved for people putting the project together. I could never co-author 210 people for the sketchbook tour and people understand that so i just reserve it for people who did the gruntwork in putting the thing together.
Lochie
Boogleys twice, once with capitals, once without.
Nice work asshat. <3