Michael Jordan created a phenomenon crazier than Imelda Marcos hoarding pumps.  Collecting sneakers became a street fashionista's guilty pleasure when Nike came out with year after year of limited edition Air Jordans.  Even canvass Converse Chuck Taylors became high-ticket fashion sneakers thanks to the Jordan brand pushing athletic footwear as must-have 'toys' for sports fans.  Know about the sneakerhead culture, both the collector's hobby and the aftermarket sales industry it has spawned online.