E-readers lately have been engaged in a feature war. 3G, touchscreens and Wi-Fi have become so commonplace that it's actually a surprise when they don't. Kobo's eReader seems to revel in just the opposite: it thrives on a very simple design and makes its $149 price as much of a selling point as anything else. In our early review of the eReader, we'll check whether that purity pays off.