Better for you or better for the reader? Sometimes they can't tell*, unless you storm out slamming the door loudly behind you. "Whatever happened to John? He used to post all the time." "Oh, didn't you hear? He died in 2012."
* I know of two forums where deceased members get a new custom rank of "beloved emeritus/emerita". But otherwise you wouldn't know-- especially if you yourself were absent for a while.