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Social media
Pixel
Simply 8-bits #4
Evernote
YellowGreen
96x96
WPZOOM Social Networking Icon Set
OliveDrab
38x38
PNG ICO ICNS MORE
Mobile apps
iPhone Sidebar icons
DarkGreen
16x16
32 Pixel Social Media Icons
DarkKhaki
32x32
Mixed
32px Mantra