But just as I think 'oh, Microsoft has over-reached massively, trying to develop Web apps and SharePoint apps and desktop apps all at the same time' and decide to go back to shouting at the Office team about the Protected View bugs or the way Offline Files with Win 7 and Office 2010 doesn't let me *save* any of the files offline (and I don't blame Win 7 for that), I click on something in PowerPoint Web and discover I can create SmartArt diagrams. Perfect for designing the architecture of our new Web site in a lovely clear diagram. And Excel has a huge set of functions in the Web app. And it's very like Office as an experience and an interface.
I'm going to take a while to make my mind up. I was saying to ianmcdonald that I couldn't give up Word because of AutoCorrect but it's also the keyboard shortcuts and a dozen other little things. If they're not in the Web version - if they're too hard to do in the browser, which I suspect they will be - will I still want to use Word Web in the random emergencies when I don't have a PC with Word on to hand?
For a more hands-on, less fluffy look at the Office Web apps, my first look is over at TechRadar.