We're not really in a bubble until Color.com (NSDQ: COLR) IPOs at a $500MM valuation and quadruples on its first day of trading. And then we're not REALLY in a

We're not really in a bubble until Color.com (NSDQ: COLR) IPOs at a $500MM valuation and quadruples on its first day of trading. And then we're not REALLY in a bubble until Air.com, the leader in the social breathing space IPOs at twice that.