Rosanne DiMesio wrote on Mon, 11 Jan 2016:
We need better spam controls on the wiki. It's been suggested before that automated registration be turned off and new users have to manually request accounts (https://bugs.winehq.org/show_bug.cgi?id=33470). I agree with that suggestion; the only thing that keeps spam off the forum is the forced moderation.
FWIW, we use the Mediawiki SpamBlacklist extensions to great effect with the following blacklists:
$wgSpamBlacklistFiles = array(
"http://meta.wikimedia.org/w/index.php?title=Spam_blacklist&action=raw&am...",
"http://en.wikipedia.org/w/index.php?title=MediaWiki:Spam-blacklist&actio..." );
It delegates the collection of spamming URLs to Wikipedia and Wikimedia, whom are are very good at it. I assume there are ways to incorporate these blacklists in MoinMoin too.
Spammers don't even seem to bother to create accounts anymore very often (http://wiki.freepascal.org/Special:BlockList and http://wiki.freepascal.org/index.php?title=Special:ListUsers&dir=prev&am...), although for a while I did regularly update our custom captcha to make it increasingly harder to handle with a regexp (as I assume that's what they used).
Jonas