Tips to Avoid Spam-Email
        When you post a message online, you can:
        1) use a temporary "throwaway address" from hotmail, gmail,... instead of your main email-address;
        2) use your main address but disguise it — for example, by replacing "@" and "." with "at" and "dot" (or some alternative spelling that humans will understand but spam-bots won't) so my address could be "craig-atttt-chem-dottt-wisc-dottt-edu" or something similar, or
        3) use other spam-avoiding strategies, like those at these links:
http://labnol.blogspot.com/2006/03/hide-your-email-address-on-websites.html
http://www.ehow.com/how_7592429_hide-email-address.html
http://www.ehow.com/how_6516099_hide-email-address.html
http://www.askstudent.com/code/how-to-hide-your-email-address-from-spammers-a-thorough-guide/
And you can find many others by using search engines.