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?
Extortion is a constant worry already, bitcoin is just the latest "magic" way of earning money that others will want to take.