Sharing in Windows 8 is easier than in any previous Windows Operating System.
Lets say that you are navigating the web and you found a page that you want to share with your friends. All you have to do is to slide your finger from right to left in the right side of your Surface to get the right side menu.
You click on Share.
After picking your social site a new slide opens where you can add a note to the link that you want to share like I did in the above picture. When you are done with your note all you do is click in the little icon on your top right below the two little people icon and that's it. Sent to Facebook.
So easy that a caveman can do it.