I am aware that is was asked to have full list of moderator and completed, however I couldn't find anywhere any indication of past moderators e.g. someone who was moderator year or two ago but no longer act as one.
My incentive for asking for such a thing: this answer (10K+ rep needed to see it) was deleted by a single member who is not a moderator now. I can only guess he was moderator back in March 30th 2011 when he deleted it, but it's only an assumption.
So, to the existing moderators list I suggest to add another link like "Archive" or "Past moderators".