Blue Captcha is a powerful and highly customized WordPress plugin that effectively protects your WP blogs from spammers and unwanted persons.
The Captcha code appears in mutiple colors, against a multicolored background, making it nigh-impossible for humans to read, which negates the point. Then, when one actually manages to enter the correct code, the plugin rejects it 90% of the time.
This plugin makes for a frustrating user experience that I will not inflict on my site's visitors under any circumstances.
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