My friend (she's actually a new member, hey Jen!) mentioned these today, I'd heard of them, but never actually read much about it... so I wiki'd them.
Apparently they originated from people seeing rabbits with Shope papillomavirus.
In all my time having rabbits, 15 years on and off now, I've never seen it here, or in a domestic rabbit. Is it common in the US or Canada? I looked at some pictures on this site...
http://ww2.lafayette.edu/~hollidac/jacksforreal.html Doesn't look pleasant at all. Just wondered if any of you had come across it?