To my experience Question & Answer anti-spam, is a great method to reduce spam. I hope it will do so on my new WordPress site too, as I received a awful amount of comment spam already (before installing this plugin).
Although the current description says "Compatible up to: 4.1.4", so far it seems to work great on WP4.2.1.
Only improvement I can think of is a possibility to have multiple questions, of which one would be shown at random.
This is what I was looking for.
Now that I had been using it for a while, I must say it works PREFECT. It was the solution for my comments spam problems. Tried Captchas and Mathematical protections, and I must say this is a great solution, much cleaner for the commenter and way more effective for me.
But I still point this...
One thing I would like is to have multiple questions and not just one. Having that, then I will make my review to 5 stars ;)
Thanks to the authors for this simple and effective plugin.
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