Yes, people can certainly use levels of logins and permissions on nearly all wiki platforms – and you would want to have someone monitor the wiki to maintain it and keep the content high-quality. What I found is that no one I interviewed had actual “graffiti” problems (well, other than spam), but genuine contributors would get upset when a re-write wasn’t as accurate as the original writer had hoped for (meaning someone changed their content, thinking his was more “right” than the first.) In that type of situation, you need arbitration, but I didn’t even touch on that in this article.

I think that some people have perception of all wikis being the “wild wild west” environment, but there are ways to ensure that no one gets shot and that a local sheriff is available if needed.