Oh, my--was this good.
From the time you pick it up until you turn the last page, you will have little chance of being productive at your job or responsive to your loved ones. If you want to know what it's about, ask any teenage reader--this is old news for most of them. It's along the same line as 1984 or Animal Farm or Brave New World--a scary but increasingly foreseeable future.
The sequel is being published in September--I've already pre-ordered it for the library.