This is a necessary book for anyone wishing to enter into criticism of contemporary culture. This, and my five star rating, isn't to say that I agree with her every argument. Quite often in fact, I found myself counter to her thinking. But what is admirable goes well beyond where I think she is "correct."
I ought to write more, but I also ought to apologize in advance to everyone who reads my own work since Sontag will have left an indelible mark on any criticism I write from now on. But I'm not going to apologize. I'm just going to recommend you read this book. Form is content.