No, no "fine art" just for JWs. Gossip happens all over, but it's more noticeable for us in the case of JWs because it's the community we interact with the most; it's also the group of people we love to complaint about the most.
The non-believers I work with are the gossipiest group, and horrible/malignant gossip at that, I've ever interacted with; sure put my JW peers to shame when it comes to gossip!
The meetings/assemblies help a bit in curtailing that common human tendency, though. Provided we practice what's taught there, of course.
DY