First time I ever saw an ace was on a hole that had a very sharp mando that forced the throws to fall right (RHFH). The shot missed the mando (a tree) some how missed all the other trees and skipped in. With us all being fairly new at the time (this was YEARS ago) we counted it without question. now that I've been around a while I question whether we would do the same today. I wouldn't take an ace away from a noob or ruin his moment, but I'm wondering what the (how can I say this right?) Disc Snobs on here would say about it.
I am as yet undecided if it were to happen to me at this point. I have one, so it's not like it would be as important as if it were my first. If it were my first, I would count it without a doubt.