I haven't been on here for a while, but have just been told of this by a wikifriend.
Very shocked to hear of Dukey passing on.
Wiki was a huge part of my life, during some very dark days.
I never needed the helpline, but Carls humour & banter were integral to what made wiki such a social experience. I wish we could have persuaded to him have come along to some of the great meet-ups we had back then.