Yes.
https://news.ycombinator.com/item?id=9608422
https://news.ycombinator.com/item?id=7503066
https://news.ycombinator.com/item?id=9147958
https://news.ycombinator.com/item?id=9258798
http://blogmaverick.com/2015/03/04/why-this-tech-bubble-is-w...