Here is a nice collection of feed icons. All are in PNG format, and all have transparent backgrounds (Although they may not appear as transparent if you are viewing via Internet Explorer). Download them individually or as a zipped set. In addition to the icons displayed below, the zipped set also includes two 500×500-pixel feed icons, one in standard orange and the other in greyscale. Please save these to your server and kindly refrain from hotlinking. Thank you.
Unique Feed Icons
Standard Feed Icons
Greyscale Feed Icons
Nice Feed Icon Collection – Version 1.0 (74 KB zip)