I also read that a group of climbers reached the summit only to find that another group was already there, and that their first act on attaining the peak was to urinate.
Kind of removes some of the spirituality, eh?
Among the things it's cluttered with are frozen corpses of climbers. I think one of the victims of the disaster described in the book Into Thin Air is still sitting right by the trail in freeze-dried condition.
Bet it smells great, too.
That seems unlikely given the extreme temperatures on the summit.