Bobbie Johnson wrote a good critique of Snowfall, and I wrote a riposte on the work blog:
“Johnson assumes there’s one type of reader, the dedicated long-hauler who will diligently read 8,000 words about your topic. There are indeed some of these people. But there are many other types of readers, many skimmers, who will likely not be that entranced by your topic, or your opening line.
It is for these types of people that “magazine-style design” (for want of a better term), where you have a core story of flowing text surrounded by many box-outs, pull-quotes, maps and sidebars developed. These act like pollen to bees: they’re attractive, interesting and sticky. They provide a different take on the topic the article is addressing, and different entry points.”
The Wired Jester 