Recaptcha's email solution isn't too elegant, but it works: http://www.google.com/recaptcha/mailhide/ http://www.google.com/recaptcha/mailhide/ If you are on a

Recaptcha's email solution isn't too elegant, but it works: http://www.google.com/recaptcha/mailhide/ http://www.google.com/recaptcha/mailhide/ If you are on a forum, you can link to a page with the Recatcha solution too (e.g. hosted for free on Github). You could combine it with a contact form too, and give visitors an option between the two.