[antialiasis]

The questions and answers are, as I thought I had made completely clear in the first post, completely customizable. There are no default questions or question formats that the bot could robotically answer. There is just an input field where you specify your questions and answers, which can be literally anything:

So what does this hack do instead? It asks a question. Any question you want. That's the best part: you make up the questions, which means that every forum is unique, which means that it is impossible for spambots to be simply programmed to bypass it at all forums with the hack installed.

Yes, it supports multiple questions:

You can make one or many questions - if you make many, the hack will pick one at random when a user attempts to register.

The answers are case sensitive at the moment, but I was now thinking about giving it a little more flexibility, both by making it case insensitive and allowing you to specify multiple possible answers to the same question (for example, if you were using the first question in your list, I believe the British would answer it with "Petrol" rather than "Gas").

I'll give you an admin CP screenshot when I've done those tweaks.