Block spam comments by adding a simple question and answer field to your comment forms.
As of April 2026, Comment Gatekeeper is a WordPress spam plugin with 10 active installations and a 0/5 rating0. It has been downloaded 2.2K+ times in total. Requires WordPress 3.0.3+ and PHP false+. Available on WordPress.org since 2013. Last updated 12 years ago — may have compatibility concerns. Top alternative: Akismet Anti-spam: Spam Protection.
Block comment spam (up to 98% of it !) by inserting a question and answer field on your comment forms. No more wasting your time emptying out pages of spam messages just to get to the real comments from real visitors!
You can create your own simple question, like “What is 1 plus 1?” and the commenter must supply an answer on the comment form. If the commenter can’t answer the question correctly, this great little plugin blocks the comment from getting into your website.
Thanks to Andrew Kurtis and his team at Web Hosting Hub for translating this plugin into Spanish!
With the recently added blocked-spam counter, we collected data on our test site that blocked 798 spam comments and allowed only 14 through – a 98% success rate!
| WordPress | 3.0.3+ requiredTested up to 3.7.41 |
| PHP | false+ required |
Update README.txt with recent spam-blocking data
Plugin data sourced from WordPress.org. Analysis and metrics by PluginSift.