untested: Topic Clustered RSS Reader (via)

This (Yahoo!/Konfabulator) widget presents a collection of RSS news feeds in a clustered format. We selected a few News sections (Top Stories, World, Sports) and for each section we hand picked a number of RSS feed sources. At regular intervals we fetch the RSS feeds for each section and parse them to get stories. We cluster the stories that are in the feeds using the variation of a single-link clustering mentioned above and present “clusters” of stories to the user.