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Possible Duplicates:
Blocking comment spam without using captcha
Alternative to Annoying Captcha in Forms: How to SMELL the difference between a Human Customer and a Spammy Robot?

I need a simple and efficient way of detecting spam robots. (possibly in PHP/JS) I don't want them to insert tons of spam into my database, through a form.

Are there some good ways of doing this (not by using recaptcha)?

Community
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Akos
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1 Answers1

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Akismet is a service/API designed to do this. It is targeted at comment spam in particular.

You could use a friendly form of captcha. For example, Tender App asks users things like "What comes after Wednesday?"

cope360
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  • There is also [Mollom](http://mollom.com/) - to make the proprietary software recommendation less one-sided. (Though it's also very comment box centric, not a generic spam filter.) – mario Aug 20 '11 at 18:34