Amazing Social Icons Set By IconShock
IconShock, a well-known icon design company, is sharing an impressive and complete social bookmarking/networking icon set.
The set has ~150 unique items in 9 different pixel-perfect sizes and they are all available in .PNG, .PSD, .AI and .ICO formats.
Also, for mobile applications, there is a "mono version" included as well.
That's not all. Every icon has 3 color states: enabled, disabled and normal. Simply, a must bookmark.