What I forgot to mention in my lightning talk about depression, there’s an excellent Australian website beyondblue which has a wealth of information and resources.
And for all of you who stuck their hand(s) up, well done and thanks again! One never knows what the response will be with experiments like this, but you did good! Chances are that with that simple act, you helped at least one other person in the room, if not more. Going by the responses I received afterwards, it was a worthwhile exercise.
As I mentioned (and really it was a spontaneous unprepared gem ;-) it’s not about being geeks, but about being human.