Can you explain to me what a "pre-deaded comments" is? I haven't heard of that term before. Also, if you don't mind, I'd be interested to hear what you have to

Can you explain to me what a "pre-deaded comments" is? I haven't heard of that term before. Also, if you don't mind, I'd be interested to hear what you have to bring against the 'Ask HN' format :) (Edit: I don't expect a long paragraph, but maybe you could indicate a general direction)