This Is How Google (And Its Advertisers) Will Really Get Inside Your Head

Google cofounder Sergey Brin said only half-jokingly back in 2002 that his company aimed to create the equivalent of the intelligent computer HAL 9000 in 2001: A Space Odyssey, but without the bug that resulted in it, you know, killing people.

http://www.forbes.com/sites/roberthof/2013/04/25/this-is-how-google-and-its-advertisers-will-really-get-inside-your-head/