Do you ever wonder how your E-mail address gets on so many spam mailing lists? One way spammers collect E-mail addresses is from web pages. To help combat this problem, you can make your E-mail address show up in scrambled javascript in the HTML source, yet it it will look and work correctly in the browser. This is done with the {mailto} plugin.
Technical Note: This method isn't 100% foolproof. A spammer could conceivably program his e-mail collector to decode these values, but not likely....hopefully.