[BirdOPrey5]

Ah that is a tough one... even if you made a question "on topic" they would likely know the answers.

However I wold still try this. I was certain I was getting hit with human spammers- but since implementing this my number of obvious spam registrations has dropped significantly.

Remember sometimes human spammers still run scripts and scripts are made around Q&A and ReCaptcha answers... When something new/different comes out like this their scripts just can't deal with it- and unless it becomes popular they may never update their scripts to work with a system like this.

Protection is from the relative obscurity of this mod/system.

If it's a real human going forum by forum one at a time nothing will ever really stop that of course- but a lot of "human" spammers use tools to speed that up- this WILL help against them.