This is an interesting article by Daniel Soar in the London Review of Books about the influence of Google. He reviews three books out this year: "The Googlisation of Everything (and Why We Should Worry)" by Siva Vaidhyanathan, "In the Plex: How Google Thinks, Works and Shapes Our Lives" by Steven Levy, and "I’m Feeling Lucky: The Confessions of Google Employee Number 59" by Douglas Edward, and analyzes what they're saying collectively about the search gian.
I love his assertion near the end of this article that: "Google is getting cleverer precisely because it is so big." This is the antithesis of what most analysts think about Google! How does he come to this conclusion? You'll just have to read the article.