How important is CAPTCHA?

trendjing

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I keep on seeing CAPTCHA or re-CAPTCHA each time I will "log-in" or just clicking a tab. Does it protect a webpage? Should I need to use this whenever I create my own site? Can you show me what are the importance in providing this?
 

Rob Whisonant

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When used on login pages, it helps to keep out brute force password scripts. When used on join forms, it helps to keep out bots.
 

ishan_shah

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Why CAPTCHA is important

Importance of CAPTCHA:
Using CAPTCHA you can protect your website or blogs from comment spams.
It is essential to prevent abuse by automated programs.
It helps search engines to prevent crawling the spam contents.
CAPTCHA are used by many websites to avoid abuse from “bots,” or automated programs or Scripts generally written to generate spam.
 

kavunkaua

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CAPTCHA or re-CAPTCHA This does not always save you from spam, but it is still one of the best ways to protect against spam!
 
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