I'm reading The Tourist by Olen Steinhauer on it. It works, but the Kindle has lost my place twice already. Which is a particular pain because there aren't page numbers. You kind of have to guess about where you were on the progress bar, then pick a few numbers at random to see how far they get you down the bar (e.g., "1100" was maybe 25% of the way through The Tourist). Flipping physical pages to find your place is definitely faster than grinding through the stop-blink-display that e-Ink requires for each page.