I read all these threads about coins becoming officially dead. However, most of these threads are FUD. When does a coin become official dead? Is it when the developer stops developing? Is it when the coin stops trading on major exchanges?
Not exactly, because even if there are no exchanges trading it, users can use escrow services to trade it, or some exchange could decide to add the currency later. I think the event that could cause the death of a cryptocurrency would be if users stopped mining it.