Uh - right now Kazaa Lite Resurrection has over 3 million users on my node and they're sharing 668,117,458 files.
I wouldn't consider that "dead".
About 2 years ago K++ was said to be "shut down" for legal reasons, when in fact the developers were just forced not to make any new versions of the program.
So other developers kept updating the program and started releasing it as "Kazaa Lite Resurrection".
The network never went anywhere.