Many players have no problem at all with backstabbing, as they correctly view it as simply another part of a normal game of Dominions. As Hadrian II says, if anyone doesn't like backstabbing, or the prospect of backstabbing, then they should only play in games with binding diplomacy.
I think this thread will be just about the easiest and most guaranteed way of offending any player that gets listed here. Since from their view they are just playing Dominions the way a lot of players play the game, and indeed view it as playing normally. But in return for this they get branded as 'untrustworthy' by players who feel they have been wronged and betrayed by a player who backstabbed them, and so list them here just to get their revenge (which I'm sure is exactly why you have created this thread in the first place).
Edit: Here's a thread of the last time this sort of list was tried.
http://forum.shrapnelgames.com/showthread.php?t=35565