I heard someone at the library refer to this book as Alexie's best, but though it's only the second book of his that I have read, I did not like it as I liked The Absolutely True Diary of a Part-Time Indian. The book read like it was rushed when written and the characters weren't very developed. Maybe it should have been a draft of a much more fleshed out story.
Also, and I'm not sure how much say an author has about this aspect, but I found the discussion questions at the end condescending at best. A question like, "How could Zits have made his foster care situations better for himself?" quite frankly disgusted me.