I've blogged couple times on the event, before and after. Now the video is up and you can experience it youself.

Recently, Yahoo! was host to an open forum whose theme was "Using the Social Graph / Social Platforms to Enhance Search & Discovery". We invited the following people to sit and chat with the audience, answer questions and discuss their thoughts. Thank you to Kevin Marks from Google, Aditya Argarwal from Facebook, Eve Phillips CEO of Chirp, and Kent Brewster of Yahoo! for being a part of a great forum.  (video link)