Good use of the Charms Bar in Windows 8 Metro.
If you’re using Win8 yet, no doubt you’ve run into the charms bar. There’s a feature to extend via Share, links to your application.
Details on the HOW are here:
Adding share (Metro style apps using JavaScript and HTML)
http://msdn.microsoft.com/en-us/library/windows/apps/hh758314.aspx
So, Digital Folio has taken their shopping tool to Win8 and enabled some really cool ways to take advantage. I was fortunate enough to help out the folks there a while back on some other things, but their app is a nice shoppers aid.