I'm posting this here because I think it might be useful to those who have their own website. I haven't used it myself, but it has many good reviews.
The Enkoder Form
The anti-spam email address encoder form.
Posting your email address on a website is a sure-fire way to get an inbox full of Spam
Although the Enkoder should help to reduce Spam, no solution is perfect. The only way to truly
prevent Spam is to never publish your address at all, ever, anywhere.