"Move to Top" button.

I don't know what it's actually, but the changes in layout added a lot of extra scrolling. Which isnt bad when you are slowly scrolling through comments. But it would be nice to a see little button that scrolls down with your screen to immediately take you back to the top of the page upon clicking it. Preferably? It'd be on the bottom for ease, but you know, I doubt this will even happen.