It is incredibly easy to buy and sell Bitcoin options: icbit.se is just one of several reputable derivatives markets that focus on Bitcoin. So yes, if you are completely sure this is a bubble, it's easy money...right?
Yeah it is incredibly easy to short Bitcoin by trusting an unregulated, anonymous website without exposing yourself to any counterparty risk... There just isn't any real way to short Bitcoin, because if your investment thesis is true and collapses, it will be very difficult to collect your winnings.
