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To protect mail addresses from spam bots, many experts use hacks like JavaScript code or text to image hack. Also CAPTCHA method is very used.

A CAPTCHA is a program that can tell whether its user is a human or a computer. You’ve probably seen them — colorful images with distorted text at the bottom of Web registration forms. CAPTCHAs are used by many websites to prevent abuse from "bots," or automated programs usually written to generate spam. No computer program can read distorted text as well as humans can, so bots cannot navigate sites protected by CAPTCHAs.

reCAPTCHA is a free CAPTCHA service that helps to digitize books. reCAPTCHA Mailhide is a free service to helps you protect your inbox from spam by asking people to solve a reCAPTCHA before they can view your email address.

Usage is very simply, just enter your email address and click Protect It, copy and paste the code in the place were you want to show your mail for contact. That’s all and say STOP to Spam.