c2.com - Wikispam: Information about ongoing issues with and responses to wikispam.
Chongqed.org - Fighting wiki spam: A creative response devised to beat one particular spammer at his own game.
CommunityWiki: WikiSpam: Discussion of how to fight wikispam.
Meatball Wiki: WikiSpam: Article discussing causes of WikiSpam and possible solutions.
Wikipedia - Wikispam: Covers two types of wikispam: advertisements masquerading as articles, and wide-scale external link spamming.