Link: http://xkcd.com/632/ | Hacker News

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		IgorPartola on March 25, 2011 \| parent \| context \| favorite \| on: CAPTCHAs decrease conversion rates Link: http://xkcd.com/632/

swores on March 25, 2011 | [–]

Actually he was referring to http://xkcd.com/810/

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