I really miss FAtlas who was head and shoulders more funny than any of the other goons. Near the end of his interest on the SA threads he was lamenting the fact that he was to lazy or stupid to figure out Bitcoinica so he could short Bitcoin to the end. Lucky for him that his deficiencies kept him safe.
I think that had rather less to do with laziness and rather more to do with the fact that shorting Bitcoins would require trusting Bitcoinica.
I do it all the time and have had no problem collecting my profits.