Interesting move, although I'd bet it will turn out to be a challenge to enforce, if the Scientologists decide to try to fight it. It will also be interesting to see how this move would hold up in court. I can certainly understand Wikipedia's point of view - they aren't discriminating against an organization but rather dealing with a group that has been quite disruptive to them. It could be interesting to see which way it swings and what the ramifications are.