User blog:Dawidn99/What do we do with no registered user?

I'm an admin for the Polish Wiki Bakugan. I do not know what to do because we have not yet Unregistered users still destroy us articles and form a new vulgar. Want to let them know that goes completely prohibit editing and creating new articles. I would like to know if I can do something about it because I have complaints from users. Write what I can do. Banning does not work anymore. Because many people have variable IP.

Help