Here are a few tools to help you fight spam.

• Spam Links: Source for preventing spammers.
  
  
• Spam Help: Source for preventing spammers.
  
  
• SPAM-L FAQ: Technical information on how to track down spammers, decipher message headers, perform traceroutes, etc.
  
  
• SpiderHunter: Dedicated to tracking search engine spiders, cloaking and other high end web site techniques.
  
  
• Fleiner: Explains bad robots.
  
  
• Wpoison: Spam-Poisoner written in PHP.
  
  
• Wpoison: Spam-Poisoner written in CGI.
  
  
• SugarPlum: Sugarplum is an automated spam-poisoner.
  
  
• Cliff's SpamBot Killer: Written in CGI.
  
  
• Blackflag: Similiar to Wpoison and written in CGI.
  
  
• SpamCon: Help with controlling spam.
  
  
• E-Mail Abuse: Help with e-mail abuse.
  
  
• E-mail Collectors
  
  
• Known Spam Harvesting Programs
  
  
• Stopping Bandwidth Theft: Apache Rewrite Module.