To tell you the truth, I probably would have seen it and wondered if they'd catch it or not. But I wouldn't email them I don't think - I'm usually fairly impersonal in most games where I don't really know anyone. Now if it was someone I actually knew fairly well, then yes. I think I would let them know.
It can come back to bite you, but in the end you feel a lot better knowing that you played honorably and if you
do win, then you know that it wasn't because you took advantage of their blunder.
