Feedster
Feedster was founded in March 2003 by Scott Johnson. In June 2003, it merged with RSS-Search founded by François Schiettecatte.
Feedster began as a weblog search tool, indexing and archiving individual blog posts based on a site's RSS feed. It gained popularity with blog enthusiasts because it indexed new information fast, let users sort search results chronologically, and made it possible to subscribe to search results as an RSS feed -- for example, to a Feedster-search for your own name. It has now expanded to offer a wide range of related services, including "Feed of the Day".
Website: feedster.com
Other comparable RSS search engines