I'm just going to post stuff I'm doing on SSP. And no, this isn't my neighbor's house covered in tnt and creepers, or is it?
"oops, I did it again. I played with your match. oh baby baby. Then it went boom, I did it again, got lost in the game. Hit my baby one more time."
Its actually a mod that lets you save chunks as you run around. A person could in theory copy the whole map if they really wanted to...