Having a form on your website is a great way to get feedback from your visitors. It makes it easy for someone to send you a message, and they can do it from any computer, they don’t need to open their email program.
One problem with online forms is they attract spammers. Automated spam bots (bots are really just software programs) search the web looking for forms, then they submit them with their unwanted message.
One method of stopping spam bots is the CAPTCHA, a challenge that is easy for a human but hard for a spam bot. Here are a couple of examples:
The trouble is, often humans have trouble reading them as well as spam bots, and humans also generally find them an annoyance, which can deter them from submitting the form at all, which is not good for your business.
A simpler style of CAPTCHA is to ask a simple question, such as “What colour is an orange?”. This is much easier for most humans than trying to decipher distorted letters. The form will only submit if the answer is correct, in this case “orange”.