Beware of Scam Numbers

This site tracks alleged hackers, e-mail spammers, and online scams. We publish raw data collected through filter software as well as user submissions. Webmasters can use this data to build blacklists and monitor suspicious activity or e-mail on their servers."

Wrongful Spam reports - People that sign up for your newsletter/website and then wrongfully mark you as spam.
http://ip.dexcms.com/spamreports