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A comment on Ask HN: reCaptcha isn't stopping spam, what should I do?.

Re:Ask HN: reCaptcha isn't stopping spam, what should I do? by Misiek on Thursday August 29, 2013 @02:19AM (#6294546)
You can change an action of the form using Javascript (ie. http://stackoverflow.com/questions/2701041/how-to-set-form-a...). Spam robots don't emulate Javascript. Users with no Javascript will see the message "This action requires Javascript".
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Re:Ask HN: reCaptcha isn't stopping spam, what should I do? by Prefinem on Thursday August 29, 2013 @09:14AM (#6295602)
The problem is you would lose the ability for users to post this way. Seems strange to cut out a percentage (albeit probably very small) of users to stop spam
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