Comment spam is increasingly becoming a menace these days.Thanks god there is Akismet to filter out spams from the genuine comments. But still Akismet is not 100% accurate and can mark some genuine comments as spam. And if you care enough to manuaaly check the Akismet spams before deleting it, it becomes a headache.

Here comes the role of Wordpress CAPTCHA plugins. These plugins add CAPTCHA images to your post comments form, thus helping you to prevent comment spam on your blog.

There are many CAPTCHA plugins for Wordpress available. But I think re-CAPTCHA is a lot better than others. It also provides the hidemail service with the same plugin. This hidemail prevents the display of email address of your blog users to spam bots, thus reducing the email-spam.

You can download the plugin here.

Other CAPTCHA plugins available for Wordpress are -

• Raz-Captcha
• Simple CAPTCHA
• WP Captcha-Free
• CAPTCHA-Godfather
• Security Captcha
• SI CAPTCHA for Wordpress
• Geo Captcha
• wp-num-captcha
• BotProof Captcha 2.0
• Really Simple CAPTCHA
• Ajax Fancy Captcha
• WP-Gatekeeper
• Bad Behavior
• Tolero spam filter

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