Wiki sites

winterswiki.org -- winters ca. good site that has an area for users to add classified ads. Also had trouble with spam. I have a wiki at winterswiki.org. It was discovered by vandals who created 9500 new users and 10,000+ pages in a couple of days. I disabled access and wiped all the users except known ones off the database, but when I enabled the wiki again new users started being created every minute or so. I disabled anon account creation, but I still have 10,000+ pages of spam intersperced with my real pages.

What is the best way to get rid of the pages I don't want in a bulk fashion? What is the best way to avoid this and other problems.

We've had almost no vandalism after requiring new accounts to authenticate with OpenID, https://www.mediawiki.org/wiki/Extension:OpenID

• My experience suggests that unless you have good reason, admins should set up new users. In other words, remove self creation of accounts.