You might have seen on several pages that people use to encrypt (not exactly) their email id in contact pages to hide it from spammers. But day by day spammers are also getting intelligent. They can decrypt your email id and challenge you.
Stop them now and use scr.im - a new service to share your email id. It is more like a mapping tool which will use one customized URL scr.im/[custom] which will point to your email id like this -
When someone click on this shared link, it will be asked for the captcha and ensures that only a human is accessing your email id not a bot. Thus keeping your mail id safe from bots, which means lesser spam.
Thanks to Shankar's Killer Tech Tips - which is one of the source of good information on softwares and Internet.