I was looking up the submission deadline for FOCS 07 (a CS theory conference), and Google carefully picked out the ads that it should show me. I guess no one bid on the keyword FOCS, but Google was smart enough to know that people who search for FOCS often also search for SODA (another theory conference). Moreover, Google knew that I was in Pittsburgh. The result? The second ad shown above, for Pittsburgh Soda -- local establishments where I can buy Dr. Pepper in bulk. Not quite what I want, but sophisticated...
