What features would a Facebook Smartphone have to have to make you buy one?You may answer those questions by leaving your thoughts below under comments" - you are also invited to take my twitter poll!When is a tweet too old to bother reading?More than 2 minutes from when it was postedMore than 5 minutesMore than 10 minutesMore than 15 minutesMore than 30 minutesMore than 60 minutes pollcode.com f