Those of you who follow Robert Scoble's blog may may have already heard this but we're excited to announce that a hefty chunk of Bill Gates' keynote presentation at MIX will consist of an unscripted conversation between Bill and Tim O'Reilly, the founder and CEO of O'Reilly media who was instrumental in coining the term “Web 2.0.” I expect Tim will ask Bill about Microsoft's take on “the web as a service,” “follksonomies,” “the Long Tail” and other Web 2.0 concepts, but who knows just where the conversation will go? And of course, the MIX attendees will have an opportunity to join in the discussion and get in a few questions of their own.