CodeCanyon - Social Sprites Icons v1.0 | 336 KB
Social Sprites Icons is a set of commonly used social icons that transition using CSS ease. This set is super lightweight and could easily be integrated into any website. There are two versions for the icons. One with white background for normal state and a transparent background version. On hover, the icons background color will change to the official color of the social network. All of the icons are in one sprite png that totals 26.1 KB.
DEMO:
http://codecanyon.net/item/social-sprites-icons/3356755?ref=nfo23