Meh.

Good points:
• It is not a dystopia. It is not a utopia. It is two, two topias in one!
• No nanites. Thank god!
• Final third of the novel
• Walkaways are a new and interesting character class
• For Doctrow fans (like me) it is fun to see him idea-check previous short stories and novels
• I got 27 new business ideas

Bad Points
• The text is primarily a delivery system for buzzwords, soon-to-be-buzzwords, and totally invented buzzwords. They come so fast, furious, and unrelenting, that the novel should be stamped with a motion sickness warning (I was frequently a little nauseous). What he lacks in quality, he makes up in quantity.
• The first 2/3 of the novel. No excitement and none of the characters wormed their way in.
• 3D printers take on some of the magical role usually reserved for nanites.
• Instead of evil military commanders with one dimension, we get evil capitalists with one dimension.

For me, Walkaway was a cross between a chat channel for Anonymous, where the cool kids invent slang to keep the noobs guessing, and a philosophy textbook. In fact, if it is any one thing, it is a philosophy parable. See the Capitalists? Bad Capitalists. Morally bankrupt Capitalists. See the people who just want to share? Good Abundance people. Morally evolved Abundance people.

For me, Walkaway was better than The Rapture of the Nerds but not as good as Makers.