ROYALTY FREE ICONS

Simplewebsurf.com list of Royalty Free Icons sites

Royalty-free describes material (typically graphics such as stock photography and icons, but also sound such as music loop samples) that may be used for profit, without paying royalties. Royalty-free media is usually acquired for a 'one time only' fee, although public domain imagery and many works created under a copyleft license are also usable without paying royalties or an initial fee.