jalaln wrote: I wonder why this MOD is not "popular", since it is more efficient than others.
Because it doesn't work 100% of the time. I don't mean that the code doesn't work, far from that. It just doesn't stop the latest generation of registration bot very well. I have something somewhat similar to this code on one of my sites and I still get 10-20 spam bots registering a week. They have simply learned to try first the standard register link directly, and if that doesn't work, they go to the register page and find the standard link and click on it. That's my experience, anyway.