I found this out a few years ago, but I never told anyone.

Edit the version in a hexeditor to something like "GpW" and you will have a "GpW" version which means only people who have it edited like that will be able to join the servers, which, of course, disables the chances of jazztooling a server because you won't have that version if you don't know what it was called, but, however, since the new listservers are out, it renders jazztool useless, and therefore, makes it impossible to hack servers unless you know what you're doing. Don't PM me about that either, because I won't tell you. Instead, I will report you and call you a fish of new orleans who does too many drugs and you will be fished out of the sludge pond and placed into a pink mac.