Amazon has built its business online, but seems to be learning that there's value in having a physical presence too. Sales assistants can explain the advantages of a particular product or service -- something that's increasingly useful as it builds a whole range of Prime perks and premium, quick-turnaround delivery services. As for books, well, there's something to be said about visiting a store and plucking an interesting novel off the shelf. Gazing at the cover, reading the blurb and flicking through the pages. (Sigh.) It'll be a while before Amazon's stores have that old, musty feel to them, but hey, they beat looking around a website for hours on end.