SpaceX CRS-3

AFAIK the soft ocean "landing" is only intended as an experiment/demonstration, and that is its only conceivable use. As such it represents commendable progress. The reason I am confident that SpaceX does not consider ocean landing as an end in itself is (1) they have brilliant talent and surely recognize what salt water immersion would do to the thin aluminum alloy bodies and to the rocket engines, and (2) the fact that the vehicle extended landing legs clearly indicates the intent to work toward a soft touchdown on land.