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Signs & symbols
Smooth
Social Flat Rounded Rects
Gowalla, Mobile
DarkOrange
512x512
Gowalla
Social Flat Dual Vertical
Social Flat Buttons
Mobile, Gowalla
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Social media
Qvoppies
Grooveshark
32x32
UI
All Google icons
Groups
16x16
Abstract
Gallifreyan Icon Set
y, generic
128x128
Avatars & smileys
Buttery
Greeding
WPZOOM Social Networking Icon Set
64x64