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I have deliberately not provided any such tools and never will. You should not do that! IPs are dynamically assigned and can be shared. You'll end up blocking the entire world out of your site. I don't see how that will help you make money.

Dynamically assigned. When I connect to my ISP they give me an IP address. Every 2 hours they recycle my IP; they assign me a new IP. The old IP is assigned to someone else. If you block my original IP because I'm using AdBlock then 2 hours later I will be able to access your site, the other guy (who's probably not using AdBlock) won't and you've dug a hole in the water. Used long enough this will lead you to block everyone out of your site and your revenue will suffer.

Shared IPs. Have you ever been to a cyber café? They only have one (1) public IP address. All machines in there share it using something called NAT (Network Address Translation). Same goes with airports, malls, Starbucks and so on. Even worse, these places usually use static IPs (not dynamically assigned) or at least a static block (a predictable, short range of IP addresses). Here's the scenario: I install AdBlock on my laptop. I fly to Amsterdam Schiphol airport and use their WiFi network to connect to your site. Now your site blocks the entire airport from accessing it. Oops!

You're welcome!

Just to add to the discussion, yes, even GeoBlocking is a bad idea. I have only seen one use case where it did make sense – mostly to avoid the nuisance of explaining people from abroad why they can't subscribe to the site. The only IP blocking that does make sense is the temporary automatic IP ban when someone repeatedly triggers the firewall in a specific (and very small) period of time. This essentially means "if it's a bad behaving robot, deny access for a while". That's what the IP Auto-ban is all about :)

Well, I have to admit that at some point I was considering removing it. Well, let's just say that some people were very vocal against it. So I decided to leave it in and just warn people through the documentation that IP blocking is not a very bright idea. I mean, it's not even a security feature.

Example: Alice blocks all countries except USA from accessing her site. Bob lives in Australia. Bob pulls up a list of open proxy servers located in the USA and connects to Alice's site through it. Since Alice's site sees an IP in the USA (the proxy's IP!) Bob is allowed in. Alice decides to ramp up security and disables access to anonymising proxies. Bob is not a stupid fella, though. He subscribes to a cheap SSH service located in the USA and uses port forwarding. Poor Alice can't block Bob and throws in the towel.

Yes, IP blocking is adequate to block Joe Average who can't use Google to find a workaround to IP blocking, but it's no match for hundreds of tutorials and hackers. But there are still some people who are only interested in blocking Joe Averages, so there you have it: the IP block stays.