Interesting user reactions at the YouTube site for that part, like e.g.:
Also explains why I hate Sharepoint so much. It’s all about top-down organizing. It’s completely counter-intuitive for me.
Yes, but we can be sure that SharePoint will add more functionality concerning emergent and freeform information tagging etc. (as IBM is pushing integrated solutions that allow for emergent information organization, think DogEar etc.) – adding enterprise wiki connectors is only the start.