Kobo Mini review: does the world need a small e-reader?

While tablet and smartphone manufacturers battled it out over screen sizes, e-reader makers seem to have settled on an industry standard of 6-inch displays. It's a trend that Kobo, at least, is trying to buck. The company is supplementing its flagship device with a smaller model, the $79 Kobo Mini, which has a more diminutive 5-inch screen, and weighs less, to boot. But how much of a difference does an inch really make? Is smaller necessarily better on an e-reading device? And with so many options for consuming e-books, does the world really need a different, slightly altered form factor? We'll tackle all of these burning questions and more after the break.