To find blogs and feeds about tech, type feed:tech in the MSN search box. The search results directly point to the XML feeds and automatically sorted by relevance.

Another RSS search operator is hasfeed: and as the name suggests, it finds web pages that contain an RSS feeds for the keywords you search for.

An easy way to find all google related blogs hosted on blogspot.com, you can type hasfeed:google site:blogspot.com. Another example could be site:nytimes.com hasfeed:Cheney, which will show all the webpages from New York Times website with an RSS feed related to Cheney.

However the feed: and hasfeed: RSS search operator doesn’t work with Live Search Feeds, Microsoft’s Blog Search Engine . To search Live Search Feeds, you have to go to http://search.live.com and choose the option Feeds.