I recall the P2P sabotage efforts being pretty feeble. I particularly recall Madonna's record company having an album labled as her most recent album shared on KaZaa that was actually just a bunch of mp3s of her saying "What the fuck do you think you're doing!?". Funny stuff.

Edit: Found a copy of the audio: https://www.youtube.com/watch?v=XU5xC00m-gA