Oh I hate horizontal scrolling, but it seems odd that the contents of the page are shifted to the left in the demo without any clear way to shift back. Maybe I missed something, but that's usually an indication of a poor UI paradigm. And I'm not arguing it shouldn't exist, just commenting that it's usefulness isn't immediately obvious. More choices are always good though!
Ah, that's what you meant. You just have to click on the original page to shift it back. It was intuitive to me, but I can definitely see people not realizing it. You're right, they should definitely indicate how to get back in some way.
