Effectiveness of CAPTCHA

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CAPTCHA screens help keep bots from flooding sites like this one with spam.

I use a very basic CAPTCHA on the comments section.

Here are 2 articles talking about the effectivness of CAPTCHA, and ways that people can beat it.

http://haacked.com/archive/2005/01.aspx

http://www.codinghorror.com/blog/archives/000712.html

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