The Scenario
You want to provide your website visitors with a way to send you an e-mail. The easiest method is to simply post a clickable mailto link somewhere on your site.
The Dilemma
You’re worried about spam. And rightly so, because you know one of the easiest ways to for spammers to gather e-mail addresses is to find the ones clearly displayed online. (As an exercise in curiosity, search for your e-mail address on Google to see how visible you currently are to harvester bots.)
The Solution: http://howto.wired.com/wiredhowtos/index.cgi?page_name=hide_your_e_mail_address_from_spam_bots;action=display;category=Work