Yesterday Facebook announced “Home,” a homescreen takeover application for Android that makes Facebook your phones primary interaction surface. Here are my initial reactions. First, this is a smart move by Facebook as an attempt to counter the threat of unbundling that is posed by apps. Competing apps unbundle different pieces of functionality (Twitter for status, Instagram for photos, Foursquare for location, Kik for messaging, etc). Facebook has rightly recognized that whenever you have unb...