The following session "Keynote Panel: Exit Strategies" was recorded at the TechCrunch40 conference in San Francisco on September 18th, 2007. Heather Harde moderates discussion with Michael Montgomery (Montgomery & Co.), Craig Walker (GrandCentral/Google), Raj Kapoor (Mayfield), Ted Wang (Fenwick), Michael Marquez (CBS) and Evan Williams (Obvious and Twitter).