The listing, Snuff - Chuck Palahniuk has ended.
An over-the-hill porn star wants to go out with a bang, so arranges for a world record effort with 600 stout and hearty fellows, brave and true. A few of this cast of hundreds are there for more than their allotted 60 seconds of, ah, contact with the legend. She has deep ulterior motives, as do each of the featured characters, and all of their twisted narratives come together in the concluding pages.
Someone is supposed to die as this event climaxes, and most of the folks know it, although their perceptions of the who, when and how don't quite match up. The plans go a bit off the rails, and everyone gets more or less what they deserve.
The main characters certainly have had enough of the world, with what they have made of it, with their fortunes having turned on single instances and bad choices, in this case almost all of them sexual. Most everyone is ragingly bitter and resentful, untrue and self-serving, bent on rectifying only their problems, regardless of effects on others. The story runs on damaged adults hurting others, intentionally and instinctively, out of selfishness and revenge, or even to manufacture a more compatible companion. It's about the need for fame, the need for redemption, the resentment of future lost, and the clawing need to retain one's perceived best position, all taking place in arena of porn, the "...job you only take after you abandon all hope."