This report discusses the costs of spam.

This report by the Internet Mail Consortium discusses a variety of filtering mechanisms.

Articles about how e-mail marketers can avoid spamming.

A paper arguing against the practice of spam-blocking on Usenet by using an altered email address.

An editorial on the negative effects of sending spam.

A collection of links to help show Internet marketers why spam is harmful to their business and to provide some alternative means of responsible marketing.

Tutorial to provide easy way to filter your unwanted junk email in Outlook and Outlook Express.

Papers about and links to projects about ways of filtering electronic information.

An e-mail marketer argues that ISPs can profit from e-mail marketing if it is done responsibly.

Suggested non-extraterritorial UK legislation that would stop spam globally.

Bill Gates gives his views on spam.

Describes the tactics of Opt In Inc. and the president of Opt In Inc., Charles "Steve" Hardigree.

Three companies using email to solicit the sale of nonexistent web addresses have been ordered to close their web businesses. [requires free NYTimes.com registration to view]