There's a LiveJournal community devoted to exposing fake LiveJournal deaths
. I love it. You find cynical observations such as this: "you'll notice when visiting luna's journal that her dad died on August 8. He was immediately buried the next afternoon. In the meantime however, luna spent the hours posting bad poetry and stupid surveys."
The Museum of Hoaxes also gets mentioned. Unfortunately it looks like they're configuring the community so that you'll now have to join it in order to see any future posts.