Board Thread:Support Requests - Getting Started/@comment-5518342-20130817171713/@comment-16079375-20130821010805

Blocking anonymous users is not recommended, as they can easily return with a different IP the next day and repeat the same things they were banned for last time. You should try to protect the pages that you want to be uneditable and then proceed to talk to the user about this issue. If all else fails, then block them.