One Billion for a Photosharing app that doesn't make any revenue. Zuckerberg gone crazy ? I would like to believe not. Zuckerberg is not loose with his money. He did even splurge on his car. He drives a Acura, extremely modest by the standards of Silicon valley czars. So, why is he splurging a billion bucks on a photo sharing app that doesn't make any revenue ? Although there is no way to justify…