I mean them innocent kids who will make posts like "I CANT WAIT FOR STAR WARS!!!11 OMG". Spoil it 4 them. Not the hardcores.
this is the only movie on the planet that can walk up to age of ultron, punch it in the face, take its lunch money, spit on every marvel staffer's children and scream kiss the lightsaber handle bytches. just look at the youtube numbers for the trailer.
it's going to be a very small minority of people who go into this one 100% unspoiled.
i was singing that same "not gonna spoil it" song myself. until the coli passed out them dinner plates...