I stumbled across this (what I believe to be) ingenious method of spam protection and I would like to share it with all of you. At the moment it’s being called ‘Negative CAPTCHA‘. It’s like CAPTCHA but in reverse. What I mean by that is instead of having a user fill out a form field with gibberish… you have them bypass the form all together. The reason they will not fill it in is because IT WON’T BE THERE. The method looks for an invisible form field to be posted with no information. The form field will be hidden by CSS so the human user will never see it. Bots...