I have to say that I would be against any type of mechanism to protect your user page, even if it is voluntary. I mean how can we expect people to use wikipedia to research information, if we don't even trust the system enough to let our user pages be edited. As I think Jimbo said, we want to keep away from the feeling of owning pages. However much works you put into an article, it is not yours. The whole concept of wikipedia is anyone can edit whatever they want, now obviously with a user page I think most of us would leave it be, but vandalism to user pages can be dealt with just as easily as to encyclopedia articles.
ASB [[User:Smelialichu]]