Old notes.

I wrote: "Mildly insulting graffiti has been inserted on the front and jump pages several times recently. There may be more of this around the wiki, it's hard to know. The main problems here are, perhaps, 1. altering someone else's signed words; 2. repeating the offense when it is cleaned up."

A PersistentVandal? can make themselves an annoyance on an open wiki. Have WikiWikiWeb or other wikis had to deal with this, and what are the best strategies ?