In Memorium.
A forum dedicated to posting death notices. People may post notices about dead or dying celebrities, friends, relatives, pets or Dopers.
There are a lot of such threads, usually in MPISMS and Cafe Society. I think they should have their own forum.
That sure would be a depressing forum. Gloom, doom and rumors of boom.
There is a sticky thread in MPSIMS for those members of the Straight Dope community who have left us. In Memoriam - Miscellaneous and Personal Stuff I Must Share - Straight Dope Message Board
And other passings are generally covered in other areas depending on fame and circumstances.