I enjoyed this book, although it wasn't as good as Scarlett Thomas's other books that I have read. The plot is so far-fetched and unusual, and it really grabbed my attention. I was disappointed when it had to end, but at the same point I couldn't put it down because I was so curious what would happen next. I also like how Thomas so eloquently captured the details of today's world, complete with references to popular TV shows, movies, books, Internet sites, and modern conviences such as mobile phones (that means cell phones for those of us in the US). People will read this book twenty years from now and have an idea of what life was like in the early 21st century.
If you haven't read any of Scarlett Thomas's books yet, I recommend that you start with "The End of Mr. Y" rather than "Going Out." However, if you are already a fan of Scarlett Thomas, you'll probably enjoy "Going Out." I especially recommend it to fans of "The Wizard of Oz," which has many parallels to this book. Both books are about a journey to a unknown yet powerful person who supposedly can help the characters find what they have always been looking for. They don't know much about this person who they believe will help them, but they are willing to risk everything they have to get to him. Also, "Going Out" contains many Oz-inspired images, such the green sparkly carpet, the yellow road, the suit of tin foil, the storms, and the witches. However, the characters do not necessarily correspond to the Oz characters, so don't waste your time figuring out if Julie is supposed to be the Scarecrow or the Cowardly Lion, or whether Charlotte or Chantal represents Dorothy.
Also worth noting: Scarlett Thomas seems to have a particular interest in mice. The small furry rodents make an important appearance in this book as well as in "The End of Mr. Y."