In order to do the IT/LED trick you have to pop the LED before you pass priority, so when your opponent has a chance to counter it you have 0 cards in hand. You cant drop IT, give your opponent a chance to counter, and THEN pop LED. You have to do both at once, and then give the other guy a chance to counter, meaning that if you IT and pop LED, your pact is in the graveyard, and you don't have any way to protect IT (assuming you haven't already duressed).

The ???? Profit thing is a Slashdot reference.