answer:Yeah.. sign up for a visitor tracking service like StatCounter. You will be able to see your visitors’ IP addresses, then you can narrow down the person you don’t want by comparing their visit times to their comment times. Then, it depends on your software. Some software, including blog software, has IP blocking capabilities. If you run your own server, you could run an IP blocking program like PeerGuardian. You can Google search and find a Javascript IP blocker, it’s code that you insert on your webpage, so that if they have Javascript installed on their browser (you can probably see this in the tracking service information), they will be redirected. I believe the one I found allowed you to customize the text on the page they would see. I ultimately didn’t use the script myself, so I don’t have the link or anything. It didn’t take me long to find it on Google, though.