The internet is Google's world, don't be stirring up trouble yo.
Check this out - "Matt Cutts, Google, Yahoo, Bing, Microsoft, Scam, Money, internet, bug, found a way to beat, secret".
/wave at all the higher ups who are reading this because of alerts for those awesome keywords!
Now that's how you cause trouble. Oh, just so I'm not completely off topic, Google wouldn't be promoting yellowbook. I bet it's an insider if your right and a clever coder if you're wrong. There would have been a whole press release hooplah if the companies had "joined forces to create the worlds first synergistic force in advertising" or some such. I didn't see such a press release.