Web 2.0 Major Companies 2006

In June 2006, Michael Arrington interviewed thirteen CEOs to find out their take on Web 2.0. The companies included: Socialzr, Excite, Jotspot, Browster, Wink, Technorati, Rapleaf, Rojo, Bolt, Piczo, Video Egg, Simply Hired, adn Eurekester. (The conversation considered the economic stability of Web 2.0)

Obviously some of these companies included remain prominent. But, I haven't even heard of some of them.

I just spoke with Robert Scoble who regularly speaks with Michael Arrington. He's going to try and ask him what corporations he would pick for the video if he remade it today.

What companies would you nominate as the elite of Web 2.0?