How ironic. I had asked Anthere about this during our interview (see http://en.wikinews.org/wiki/Wikinews_interviews_Florence_Devouard%2C_chair_of_the_Wikimedia_Foundation ).

I think that the most popular form of this "vandalisim" is changing the logo. The logos aren't copyrighted by WMF, so it's really bad to be doing that. I am not completley against small amounts of vandalisim that could be easily reverted, but otherwise, things like changing high-risk templates, etc. is horrible.

We need to have a load of people on RC Patrol that day. Especially admins, so they can easily revert.