Who is somewhat involved in the feeds/rss/rdf/atom world like me may have noticed the interesting discussion at the Microsoft Team RSS blog. There is now a consens by major players about using this common icon  to visualize webfeeds. Two or three days ago Matt opens a site named http://www.feedicons.com/ to get it broadcasted and so I did by this post

As soon Dare Obasanjo gets the bugfix installer ready of my favorite NewsReader you will notice we use it the same way as it will be used within IE7 - to indicate autodiscovered feeds while you browse. OK, that's an old feature, but you know we refreshed all our used icons and so it was just the right time for the right think thing.