使用也很方便，你可以这里输入想要保护的Email，提交之后就会产生html的代码，你就可以在写Email地址的地方用了，发送Email到：查看地址。  可以输入验证码获取你的比较重要的Email了，个人觉得很方便，实用。

其实不仅保护Email，当然还可以保护其他的东西。有用的可以体会一下。当然，这不是软文，本人博客目前没有一篇软文，不要敏感，只是分享，以后可以写写。

=====================================

eCAPTCHA is a free CAPTCHA service that helps to digitize books, newspapers and old time radio shows. Check out our paper in Science about it (or read more below).

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.