Why do I need image verification on my website ?
Image verification, another name CAPTCHA, will prevent bots (internet bots or web robots) from using your web form for sending email spam.
CAPTCHAs have found active use in stopping automated posting to blogs, forums etc.
There are two methods to protect your website from sending an automatic emails:
The first one is to insert free CAPTCHA code into your website. Use Google to search for "Free CAPTCHA", "Free CAPTCHA script" etc.
Another method is to create CAPTCHA script by yourself. I found a nice and simple CAPTCHA script here.
Relevant links:
Free CAPTCHA script: http://www.thefreecountry.com/php/captcha.shtml
