But the real issue is acceptable criteria for imposing such a block. While we all agree that outright vandalism and obscenity are legitimate reasons and that "point of view" and "emotional involvement" are really bad reasons, I hold that "demonstrated unwillingness to work with others" is a perfectly legitimate one as well, so long as one judges this on genuine content-neutral grounds. Others may disagree.

I completely agree with you. Lir is not aware at all of the basic netiquette. Insulting other users and changing their quotes is in my opinion equivalent to vandalism. How could someone be called a useful contributor, if he calls other users "racists" or "idiots", and this more than once. We should not make so many efforts to protect persons behaving this way.

Mirko (Cordyph)