MSN is first out among the big search engines to add special operators that lets you search for RSS and Atom feeds.

Use the feed: operator to search for documents that are RSS or atom feeds. For intance, you can type feed:pandia into the MSN search box if you want to find Pandia’s search engine news feed.

There is also a new special operator that lets you search for documents that contain feeds, the hasfeed: operator.

In addition to the two brand new operators for feed searching, the site: operator lets you restrict your search to a particular folder hierarchy in the URL up to two levels deep. So you can type site:www.apple.com/ipod into the MSN search box to search the part of Apple’s site dedicated to the iPod.