With Windows 8, it will really become irrelevant where things are physically stored.
For example, you want to share a picture you have taken. You might have this in your “Pictures” folder on your PC, but it might just as well be on your SkyDrive on the Internet or on Facebook or Flickr – for you the experience of sharing the picture is the same.
Another example of how Windows will be connected to Internet services is experienced through the “People app”. This is an address book application that contains contacts from a variety of different sources – Hotmail, Exchange, Facebook, Gmail or Twitter. You will be able to see profile pictures and updates from your contacts with no effort on your part.