It all comes down to low interest rates. As long as rates stay low, the bubbles will build. Fred Wilson wrote a good piece on this last year: http://avc.com/20

It all comes down to low interest rates. As long as rates stay low, the bubbles will build. Fred Wilson wrote a good piece on this last year: http://avc.com/2014/03/the-bubble-question/ http://avc.com/2014/03/the-bubble-question/