From all the things I have seen here on Wikipedia, it still amazes me at the amount of personal abuse that are dished on some people. We have definitely lost many valuable Wikipedians over the years. Either because of real-life problems, their own desire to not be on Wikipedia anymore, or because of personal attacks against them, this is a list of those that have been lost. May we always remember them...
(Please feel free to add to this list, but make sure the people have left Wikipedia forever. I'm sure there's people you miss too.
P.S. Don't put people on here that have the "left Wikipedia" userbox, as there is already a place for them. This is for everyone else.)
Wikipedians We Have Lost edit
1. User:H
2. User:Sidatio (This user is doing the retired sign, but was driven away from Wikipedia by death threats.)