AngryPets.com: ReverseDOS - A free tool by Michael Campbell to stop comment and referrer spam by serving up an access denied response to spammer's bots. - http://angrypets.com/tools/rdos/
ILoveJackDaniels.com: Block Referrer Spam - Dave Child provides a blacklist of spamming sites which can be used in an .htaccess file on an Apache server to block referrer spam. - http://www.ilovejackdaniels.com/spam/block-referrer-spam/
ihelpyou.com: Why You Shouldn't Publish Your Web Logs - Forum thread explaining that you should not publish your website statistics online, because of referrer spam. - http://www.ihelpyou.com/forums/showthread.php?s=&threadid=9595
Capn Design Archives: Referrer Spam is Out of Control - Blog entry with a few coding suggestions and examples to thwart the spammers. - http://www.capndesign.com/archives/2004/07/referrer_spam_is_out_of_control.php
Sam Ruby: Referrer Spam - Blog entry discussing ongoing problems and solutions. - http://www.intertwingly.net/blog/1649.html
Referrer Log Spamming - Brief description of the technique and the purpose, with some examples. - http://www.komar.org/faq/scumbags/referrer-log-spamming/
kuro5hin.org - Referrer log spam - An early article noting website visits from spammers. - http://www.kuro5hin.org/story/2001/5/30/22341/3757
MetaFilter - Referer Log Spam - Talks about companies like mastodonte.com and their business models of spamming referrer logs. - http://www.metafilter.com/comments.mefi/21063
Wired: When the Spam Hits the Blogs - Strange things are afoot in blogland. Owners of weblogs have recently noticed that their referral logs have become the newest target for spam. - http://www.wired.com/news/culture/0,1284,56017,00.html