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StopForumSpam - a database of known forum and blog spam, its sources and the email addresses reported as its origins
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Beware of cheap imitations! SpamCop has been protecting the internet community since 1998. Automatically file spam reports with the network administrators who can stop unsolicited email at the source. Subscribe, and filter your email before it reaches
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Spamhaus tracks the Internet's worst Spammers, known Spam Gangs and Spam Support Services, and works with ISPs and Law Enforcement Agencies to identify and remove persistent spammers from the Internet.