I found a great write-up on different ways to hide your email address from spiders that are designed to 'crawl' the Internet and find email addresses. Once found, these addresses are sold to Spammer's and the junk mail pours in. Using some very simple techniques, you can add code to your email link to mask your actual email address from these automated tools.
Below is the link to the original site:
Digital Inspiration: Hide your email address on websites from spam
John "Mike" Wright