A CAPTCHA is a program that protects websites against bots by generating and grading tests that humans can pass but current computer programs cannot. For example, humans can read distorted text as the one shown below, but current computer programs can't.
There are several applications of Captcha code:
- It prevents comment spamming in blogs.
- Protects website information.
- Protecting email address from scrapers.
- Protecting Online Polls.
- Protects against email worm and spam.
If your website needs protection from abuse, it is recommended that you use a CAPTCHA. Check the above link to get free Captcha to your site or blog.
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