Let's say you are sitting in an office late at night in an empty building and you look up and there's a gunman.
He doesn't want money and he doesn't want any of your possessions. He doesn't even know you. He just wants to kill you.
You begin to panic and you try to reason with the gunman, but he's in no mood. Then you hop on the Internet and begin typing a post into a message board, hoping like hell someone will see it and call for help. The gunman realizes this and then tells you that if you hit "post," he'll kill you.
Do you hit "post"?
If you do, do you think the gunman will actually kill you?
If you do not, do you think you'll be able to talk the gunman out of killing you?