PNG ICO ICNS MORE
Somicro
paypal
Teal
32x32
Digg, variation
Digg
paypal, variation
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odern Web Social Icons
Xing
64x64
slashdot
Linkedin
Social Stamps - Icon Set
Sharethis
128x128
WPZOOM Social Networking Icon
flickr
Sphere
window
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iPhone Toolbar icons
paint
30x30
Android 2.x Monster
creep
48x48
Social Network
komodomedia, Azure
Social Media Mini
16x16