Mark Clements wrote:
So for example you could have a page called [[MediaWiki:TitlesBlacklist]] Which could be a newline separated list of regular expressions to block for title creation. (With of course an associated [[MediaWiki:TitlesWhitelist]]). Then have an extension which applies the rules prior to page submission, and also on retrieval (in case some malicious user finds a way through).
Something like this is on my to-do list - although it will be considerably more sophisticated, and probably disablable core code.
Andrew Garrett (werdna)