Favor: could someone share an intelligent (or at least in-depth) write-up of the pros/cons of infinite scrolling? Most of what I'm finding on the web is content farmy. Also: at what point is memory usage worth worrying about? Scrolling for pages on end has to be tough on a browser.
pro : good for mobile users - con : no footer
On the cons side, as others have mentioned, if you navigate away from an infinitely scrolling page, then click the back button, you often don't land in the correct place.