The Google problem is exactly why I don't post using my real name. Sure, someone could figure out who I am using an IP address, but that is a lot more trouble than a simple Google search. Furthermore, it would require access to the logs from the equipped.org server. A potential employer is not going to go around to every forum on the internet where I might have posted and try to get access to their logs.

As far as the school board example, someone could find out what sort of weapons I own a lot more easily than tracking down my posts on the internet. All they have to do is come down to the range and watch me shoot. Hell, if they ask nicely, I'd probably let them fire off a few rounds.