Directory / plugin
Antispam Revolution
v1.3 · by Radek Mezulanik
Three way antispam protection for registration and comment forms.
About this plugin
This plugin:
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Add 3 hidden fields to Registration form and to Comments form, that only robots can see. Plus you can choose to add validation checkbox to forms.
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Add to .htaccess file direct access protection for comments file.
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Check time user spent on page and time when user send a form.
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Disable trackbacks for past and future posts.
Additionally you can choose to add validation checkbox to forms.