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UI
Flat
Metro UI Icon Set
Stumbleupon
LimeGreen
512x512
phone
Flags
2400 flags
Tanzania
64x64
Uzbekistan
Social media
Metro UI Dock
360, xbox
Center, sync
Kinect
Homegroup
sync, Center
Burundi, revision, enterprise
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Desktop apps
Homegroup, Mirror
640x640
xbox, Mirror
Mixed
Toolbar icon set 2
baloon
32x32
SocioLEGO
Technorati
256x256