I'm curious, where is "share" (and please don't tell there is a "Send"). Android and iOS have pretty much standardized Share icons which are becoming global icons day by day.
The share functionality is built into the OS now so you don't need to dedicate a portion of your screen real estate for it. If you load the charm bar on the right of the screen share has a fairly prominent placement there.
This makes me wonder why "settings" is included in the default icon set. Settings should be accessed via the charms bar as well.
Windows 8 has a share charm, which is the preferred way of sharing content not items in the app bar.