Internet.com's Opt-In Announcements

Free targeted third-party mailings that will notify you of products and services that meet your technology interests.
ROKSO Home Page 
Database of known spammers who have repeatedly violated ISP's anti-spam regulations.
8 Ways to Take Names
Some creative, but ethical, methods for getting visitors to opt-in to
your e-list.
The Spamhouse Project
An organization that works with ISPs to identify and remove spammers from the Internet.
Eye on Spam
Powerful weapons have emerged in the war against spam, so why isn't the problem going away? A 2002 Datamation article.
How Not to Unsubscribe
Is it safe to use an 'unsubscribe' link to stop getting e-mail from a
particular sender? Or will clicking the link just get you more spam?
Opt-In E-Mail: The Solution to Today's Mail Scares
InternetDay looks at the financial advantages of opt-in e-mail programs.