Blocking MediaWiki Spam

Around the web there are many people talking about the problem of wiki spam on MediaWiki, and how to block spam. Some of the more comprehensive resources are...


 * Mediawiki Anti-spam Features - The official mediawiki anti-spam page. Breif descriptions of the main anti-spam features which you can activate/install. Note that most of these are not activated by default.
 * $wgSpamRegex details and examples - An easy MediaWiki configuration setting to get started with. Some examples provided.


 * Mediawiki Wiki Spam - Description of what wiki spam is, and instructions on how any users can help tackle the wiki spam problem (not just administrators). ...Not all of which is obvious, so worthwhile administrators reading it too, and you might like to refer your wiki users to this.