If you say his name three times he will come back. Applies to qute a few.
Ther are so many posters who came here asking a single question, discussed/debated the collective wisdom, and then drifted into oblivion leaving us to wonder what happened to them.
Go to the member list, look for those with high post counts that also have "no recent activity" and check to see when they were last here. It's a good way for folks to bring back to mind those that used to be here.