Blogs, Tagging, RSS Feeds forum discussing current and emerging syndication and content building technologies, such as RSS, XML feeds, JSMsg, and others. Find help with syndicating blogs and dynamic content.
There's no central registry of RSS feeds - you're just going to have to search relevant sites to see if they offer feeds. (About the closest I know would be news sites - your local paper or radio station or a site like CNN - but that's not just the scores you choose, it's all the news. Maybe pick up a CNN feed on your own site, scrape it and feed the scores you want.)