User blog comment:Brandon Rhea/Turning Readers into Editors/@comment-168424-20140323011006/@comment-1038387-20140323191816

In that case, you can try explaining it on his message wall. Explain that it's how your wiki decided to handle the matter, and should he ever find his edits reverted, he should take it to the talk page. Warn him that ignoring that (very reasonable) request may result in a block.

There's a downside if the anon's got different ips every time. We actually had the same issue with a registered user once (don't get me started about NickLenz).