10 Things to Check Before Using a CAPTCHA

This is an interesting article about combating form spam, using ten techniques other than CAPTCHAs, which are the extra fields a lot of sites use to verify that the user is an actual human and not a spam bot. They add an extra step for the user, and can be frustrating, especially if the words you are asked to type are hard to read. This article explains ways to avoid their use, and still cut down on spam significantly.