Quote (Lethardus @ Fri, 25 Jul 2008, 12:37)

You could argue that people will just create more multi accounts, but they plan to do it anyways, so that's not really a feasible argument.

In my opinion this is a very good suggestion. Consider that in order to hit that high of a warn percentage you almost need to try for it, which means that something like this could reduce the spam and nonsense from those users.