You are looking at a picture of some of the most powerful and influential people in the online/social media world.  In case you just landed on Earth from Mars, this is a picture of the founders of Kirtsy and Guy Kawasaki.  Guy only wears the boa during the Alltop-Kirtsy parties.  The rest of the time he is "your-average-silicon-valley-tech-guru-who-is-nice-to-little-people-like-WTM".

Here are some additional pictures from Blogher 08.