Prevents people posting comments using the same name as a registered users display name.
As of April 2026, Duplicate Comment Authors is a WordPress users plugin with 10 active installations and a 5/5 rating from 1 reviews. It has been downloaded 1.9K+ times in total. Requires WordPress 3.0+ and PHP false+. Available on WordPress.org since 2012. Last updated 12 years ago — may have compatibility concerns. Top alternative: User Switching.
This plugin prevents imposters from leaving comments on your website with either the same name or email address as a registered user on your site.
This prevents users on the blog from being impersonated.
| WordPress | 3.0+ requiredTested up to 3.7.41 |
| PHP | false+ required |
Initial version – core functionality.
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