Anti-Captcha

Anti-Captcha uses a complex nonce key to protect sites against spam-bots.

Anti-Captcha is transparent for regular users but bots won't be able to avoid it because they'll never have a valid nonce key generated when accessing the site.

Protects the blog against spam when:
Posting comments
Logging in
Registering for a new account
Requesting a lost password

Installation:

Unpack and upload it to the /wp-content/plugins/ directory.
Activate the plugin through the 'Plugins' menu in WordPress.

What is new in this release:

• Fixed a tagging mistake causing a "The plugin does not have a valid header" error for new installations
• Added a plugin icon

What is new in version 20140128:

• Fixed a bug that broke WordPress discussion settings.
• Improved code compatibility.
• PhantomJs headless browser detection.

What is new in version 20130927:

• Fixed a bug in which the 'An administrator must always approve the comment' settings was ignored.

What is new in version 20130421:

• Version bump to remove WordPress 'Out of date' alert.

What is new in version 20100708:

• Tested on WordPress version 3.0.

Requirements:

• WordPress 2.8.4 or higher