VH, Sure, i'm not arguing about the causes of these bubbles, but...

VH,
Sure, i'm not arguing about the causes of these bubbles, but how they are exacerbated and cruelly played out. There is plenty of reading about this out there. I am also not referring to any individual in particular but the concept of shorting in itself.
Shouldn't share investing, even trading, be about reward for productivity? Isn't the idea of buying a share to gain growth on the perceived or actual gain of productivity? Shorting can only be about greed without the concept that productivity = reward.

I have no problem with a CFD bet between a trading house and a punter. That is an agreement between two parties on price movement, but on market shares is a different story, as shares are a chunk of the company.