News: Watch out for snooping spam
Watch out--the spam choking your e-mail in-box may be loaded with software that lets marketers track your moves online, and you may not even be aware that you've been bugged.

Web sites have long planted bits of code called "cookies" on consumers' hard drives to tailor Internet pages for returning visitors and better target ads. Now, enhanced messages that share the look and feel of Web pages are being used to deliver the same bits of code through e-mail, in many cases without regard for safeguards that have been developed to protect consumer privacy on the Web.
http://zdnet.com.com/2100-1105-876183.html