The navigation is very nice and snappy. It gets out of the way. Most UIs for browsing and navigating material feel constricted, like you're handling some kind of radioactive material through those thick gloves mounted directly into the fume hood.
Other than that, I had forgotten what a shameless exercise in marketing these magazines were. You were basically buying a book of ads. Even the articles feel like copy under the thin veneer of "Oh, look at this cool thing!".