Dirceu Veiga had released a free RSS icon set which contains 8 icons in different format for Smashing Magazine readers.
These icons are free to use for both private and commercial use and are available is various resolutions: 16×16px, 24×24px, 32×32px, 48×48px, 128×128px, 256×256px and 512×512px.
You can download the icon set in different format: PNG, Windows icons, and Mac icons.
So, which RSS icon you prefer? I prefer the first one, which is a man reading the newspaper. Hurry up, change your RSS icon to attract people to subscribe your RSS feed!
Source: Smashing Magazine