Has North America officially entered the Post PC Era?  I think it is really more an effect of a proliferation of entertainment devices and new uses for consuming content in new ways, not that there is a massive PC drain.  The majority of productivity work is still done on PC’s.  The Post PC Era is a great time in the world of technology, but it’s like trying to say what the biggest sport in North America is!  They are all big now and each device has an important role as do each sport.