This plugin utilizes Google reCAPTCHA to help your blog stay clear of spams. You can use this plugin with Akismet and Contact Form 7.
It only shows the tag instead of the captcha.
Hasn't been updated and no longer works
With contact form 7 Version 4.1, shows captcha but submits form even if captcha left empty, ie: as broken as it could possibly be. DOES NOT WORK.
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