By Ian Haynes

Spam bots usually fill in all the form fields they see on a page, and can’t tell whether a field needs to be blank. Developer Martin Psinas takes advantage of this to create simple spam protection:

http://www.sitepoint.com/easy-spam-prevention-using-hidden-form-fields/

Author Bio

Ian Haynes

http://www.ew-resource.co.uk/

Ian is a front end/back end developer currently focusing on HTML5/CSS3 and mobile responsive design. He's a regular poster on the Expression Forums and Gallery.