Not to mention that using the left and right arrow keys pushes the current page onto your browser history which is unnecessary. It's far easier to go back/forw

Not to mention that using the left and right arrow keys pushes the current page onto your browser history which is unnecessary. It's far easier to go back/forward with the arrow keys you're already using, plus it'd be nice to be able to click the browser's back button to return to the site that linked to the presentation.