Extortion, a familiar tactic when it comes to the Bitcoin scene and business in China.
I don't really understand this. Is extortion a familiar tactic when doing business in China in general, or specifically when doing Bitcoin business in China? It seems odd to refer to extortion, or any tactic, as "familiar" for such a new thing as Bitcoins. In any case, I found the statement surprising. Are ASICMiner staff frequently fending off extortion attacks as well?
They make a stack load of money. I'm sure they are being attacked in many ways. Money is a dirty business wherever you are.