Q4 2010 feels about right to me -- that's when companies started to hire more aggressively, anyway. In retrospect, my first "this might be insane" moment happe

Q4 2010 feels about right to me -- that's when companies started to hire more aggressively, anyway. In retrospect, my first "this might be insane" moment happened when techcrunch wrote the "airbnb has arrived" article, announcing that they'd grown a horn and become a unicorn. That was June 2011.