Fb will eventually pick up advertising revenue market share from google. Fb advantage is 1 billion subscribers and growing. You can target advertising to selected interest group and consumer can have dialogue/social conversation. Plus if you get a miss on social graph search it will search the Internet using bing (msft and fb partenership). Social networking is just getting started. Huge potential. Social graph search is just the begging. Apps will migrate to open graph where you can tie interest group apps and location service any event or topic inside and outside Facebook. Goog is still a strong company but don't underestimate social networking.