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Social media
Smooth
Social media simple
Stumbleupon
WhiteSmoke
256x256
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Music & multimedia
Social + Tabs Color: Free
40x40
YOOicons Social Bookmarks
Social, White, Box
512x512
Socialize
128x128
Amazing 3D social icons
Social Media Balloons
Balloon, Stumbleupon, Social
Social Poststamps
grey, Stumbleupon
Web social icons
UI
Function icons
48x48