Usability guru Jackob Nielson has given Amazon’s Kindle eBook reader the once over. His conclusion: perhaps unsurprisingly, the device is great for linear reading – think books, and in particular novels – but falls down badly when consuming non-linear content, such as electronic versions of magazines or newspapers.

Additionally, Nielson says that although he has previously questioned the viability of eBook reading devices in general, the Kindle’s e-ink screen technology and his own reading speed using Amazon’s device (less than 0.5% difference compared to the exact same paperback) has changed his mind.

On the Kindle’s linear reading strengths, Nielson gives praise to the device’s dedicated page turn controls:

… turning the page is extremely easy and convenient. This one command has two buttons (on either side of the device). Paging backwards is a less common action, but it’s also nicely supported with a separate, smaller button.

The device thus offers good support for the task of linear reading — appropriately so, as Kindle’s design is centered on this one use case. While reading, your only interaction is to repeatedly press the next-page button.

However, “anything else is awkward”, writes Nielson.