The slideshow often seems like a random mish-mash of related images and graphs, with animating flourishes that distract rather than adding information.
I thought clicking them might branch off or accelerate the voice in that topical direction; instead in most cases it's just a zoomed modal lightbox that stops the voice and offers other outlinks. Some of the infographics are wrong where Wikipedia is right; for example its report of the area of the city of Palo Alto is off by a factor of 100. If the same information were just inline, I could read/scan them faster. As it is, rewinding is harder than the same info provided in a scrolling view.
I suppose if Wikipedia has 'too many words', or if you were otherwise of limited literacy, Qwiki might be valuable. I was underwhelmed, but then again I prefer the wordiness of the NYTimes or WSJ to cable TV news, most days.
Perhaps having it be a dashboard for other info sources -- as in the founder's 'alarm clock'/wake-routine scenario at TCDisrupt -- could provide some other value... but perhaps not more than other tech that can read a block of text stitched together from many sources.