True, this is a cool technology that deserves discussion, but if the presentation gets in the way of people even understanding or seeing (note all of the people who didn't know they could scroll and closed out the window) the cool new technology, then something is definitely wrong. Imagine when less tech savvy users open the site, they definitely aren't going to scroll. About the tech, I'm not so sure the required act of flipping your phone around to the right side to view a message is a great implementation, as opposed to a normal screen lighting up for a few seconds. It seems like it could become a hassle for users.