PNG MORE
Social media
Smooth
Social Icons Pack
flickr
WhiteSmoke
50x50
PNG ICO ICNS MORE
Social Poststamps
grey, flickr
128x128
Pixel
Social Networking
32x32
Desktop apps
Polaroid
62x78
Web social icons
UI
Function icons
48, flickr
48x48
3D
Set of social icons
64x64