1. Artists considering releasing un-rehearsed, poorly arranged, poorly played, derivative drivvle that does nothing for anyone except the artists involved.
2. Cheaply recorded crap engineered by part timers who have have the strange assumption that their £100 microphone through their computer will yield professional results.
Oops I went slightly OT, been that kind of a week
Sticking to the topic:
Anything that is already pushed to hell or has the air sucked out by badly executed compression or has unintentional distortion or is completely unbalanced.
If those things are a reality then poor labelling is the least of my worries...