says @theanxy "check slide 38". So I added HTML5 pushState to S5 = #html5now automatic slide permalinks. Reload: http://tantek.com/presentations/2011/03/html5-now
then arrow-key through slides and watch the URL bar update. Try the back button. Copy & paste a slide permalink into a new window and watch it load that specific slide. Since we're asking IE9 to add pushState support (ttk.me/t4B23), it only made sense to make good use of it ourselves.

on (ttk.me t4B25) using BBEdit