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Social media
Pixel
Mighty Social Icons
Gowalla
DarkOrange
32x32
Avatars & smileys
Smooth
Buttery
Greeding
128x128
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WPZOOM Social Networking Icon Set
Grooveshark
38x38
64x64
Computer & hardware
3D
Human o2
Undelete, rtl, gtk
gtk, Undelete
Photography & graphic design
Dark Glass
windows, glass, wine