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Metro UI
Stumbleupon, Mirror
LimeGreen
640x640
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Metro Uinvert Dock
Stumbleupon
256x256
Mirror, Stumbleupon
320x320
512x512
Simple Social Icons
64x64
Clean Noise Social Media Icons
128x128
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SocialMate
WPZOOM Social Networking Icon
Polaroid
62x78
Handycons
48x48
UI
Flat
Metro UI Icon Set
SEO & web
Glyph
Social media
Metro UI Dock
Smooth
A Clean Mini Social Media Icon Set
32x32
WPZOOM Social Networking Icon Set
Desktop apps
Handdrawn
Handy