The first time i saw a shaman using water walking I thought they were hacking (I was alliance obviously) so I probably would have thought they were cheating. Wouldn't have reported them/flamed, but I probably wouldn't have thought it was a legit way to play.

I've still not come across a multi-boxer in game yet, I found out about this site from an article about Xzin, which is what got me interested in it.