I was reading a sample on my Kindle, and bought the full book on my Mac. As soon as the full book had downloaded it immediately transferred me to the exact same place in the full version. I didn't do anything. That's freaky and magical.

@matthilt I know, and it weirds me out. When I was a kid I thought I'd be living on the moon by now, but this sort of thing wasn't even on my radar. I do like the feature though!