Why not limit posts to one pic and set quoted posts to nil on include images? That would take care of most of the problems that could come out of this. Other than that i like the idea although I doubt I'll post images very often.
Hmmm no sooner did i post that than I came across this thread.
http://www.greenguysboard.com/board/...ad.php?t=52207
I think that's a bit of overkill but that's just my opinion.