Cheers folks!

David - fixed that typo - bloody auto-correct!

Kenny - I'm perpetually confused by the number of Mac users I know who hate change. What have Apple EVER done to accommodate conservatism (in the actual sense of the word, not the political sense)? If you don't like change, surely Microsoft with their backwards compatibility fetish would be a better fit? Apple are notorious for just moving forward, and leaving the past behind. Apple are a company that push the industry forward, you can't do that without introducing a lot of change!

You are right that for sliders, things could get a bit confusing. But, I think more and more Apple customers are embracing the full Apple ecosystem. Also, anyone who uses iOS & Windows is doing that sliding already, without too much difficulty.

I also have to wonder if this is not somewhere MS may well follow. They really seem to be keen to move forward, as evidenced by Windows Phone and Windows 8. I think they're making bad decisions in how they move forward, but, I'm delighted to see them do something truly new, and, truly original. Given the success of iOS, and, if Steve was right that the iPad will become the car, the traditional computer the truck, then it make sense that Windows will follow the Mac sooner or later in banishing document limbo to the pages of history.

Bart.