It was a masterful mission, and the crew of the Maersk Alabama, as well as the US Navy SEALs, showed considerable bravery. I would have thought that the actions of the US--as opposed to some countries which have simply paid pirates ransom--would deter future pirate attacks.
Of course, this assumes that the pirates are using common sense. Yesterday, Somalian pirates attempted to seize an American vessel...which turned out to be none other than the Maersk Alabama. Again.
The pirates were easily driven off thanks to a compliment of armed guards which now stands watch over the vessel.