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SEO & web
Glyph
Metro Uinvert Dock
Stumbleupon
SteelBlue
256x256
LimeGreen
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Social media
Picons Social
upon, Stumbleupon, stumble
Black
512x512
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UI
Windows 8 icons
DarkSlateGray
26x26
Mixed
IcoMoon
32x32
InFocus Social Media Icons
square, Stumbleupon, Logo
40x40