I know several people that got fooled by this yesterday, so really quick, let's try and put this particular fire out.
Jon Bon Jovi is not dead. Repeat: not dead. The link goes to him posting a picture of himself holding a sign saying "Heaven looks a lot like New Jersey," which is not the afterlife people think of when they think of New Jersey, but point made. Some guy wrote up a hoax and a whole bunch of people fell for it. Hopefully not you, but if you did, don't worry, he's fine.
Lil' Kim is also not dead; though I didn't see any of that floating around, rest assured that some people were dumb enough to see Kim Jong-Il's death announcement and get confused, including former Detroit mayor Kwame Kilpatrick and Bill Maher, host of HBO's Real Time with Bill Maher-- two people who really ought to know better.