Hang a copyright notice on your squad logos and you're in business... The squealing Pigs have some original artwork that has even been proposed for use on a B-2 bomber during the Kosovo campaign, and since it's copyrighted they had to ask us to use it first.
If anyone starts using our logos without permission, we just point out that it's copyrighted and ask them to stop. So far we've had a bunch of people ask to use the artwork and we usually say yes if it's something cool, but once we had to tell some guy who was using our logo (slightly altered but still clearly our logo) to knock it off, and he complied.
Copyright is only as strong as your efforts to enforce it, so if you really care about it, you have to actually do something.
And on top of that, imposters and posers suck. I don't know anything about JBxx or what any particular JBxx is doing, so I can't have an opinion about that
