article: How red-hot startup Fab raised USD330 million and then went bust

http://www.businessinsider.com/how-billion-dollar-startup-fab-died-2015-2

Perhaps Rocket Internet AG. will end like Fab.
http://onlinedatingsoundbarrier.blogspot.com.ar/2015/02/rocket-internet-ag-goes-food-crazy.html

Please read also:
How Fab went from a USD1 billion valuation to a USD15 million fire sale
http://onlinedatingsoundbarrier.blogspot.com.ar/2014/11/how-fab-went-from-usd1-billion.html
There is a large dotcom bubble fueled by venture investment funds, investors who are dragging other investors to continue investing until they can sell shares of the company and recover leveraged money, but the last holder of shares is going to lose. 

 
Article at Vator: The USD1B valuation club became super crowded in 2014
http://onlinedatingsoundbarrier.blogspot.com.ar/2015/01/article-at-vator-usd1b-valuation-club.html
With valuations jumping so high, the USD1 billion club is getting easier and easier to get into. In 2014 alone, 38 different companies entered the USD1 billion club, according to a report from CB Insights. That is more than the three previous years, when only 22 companies made it combined.