I was recently in Bangalore, the Silicon Valley of India, and came across a media group on a person's T-shirt (I couldn't see the entire name) but the name ended in "[something]mediagroup.biz" And that reminded me of the extension which supposedly, I have never ever typed in my browser to open any website. Hardly ever do I remember, opening a website with .biz in its extension. And I realized that .BIZ is extension is dead. And so is .MOBI What other extensions do you think are dead, that you remember existed few years ago and haven't seen them around in a while? What do you think is the reason behind their demise?