Linkrdr aggregates your RSS feeds, links from Twitter users, Reddit user feeds, and GitHub activity. They then extract all your "delicious link-juice" and sort them by relevance. You can also see the most popular links across all users. This is another type of news aggregation service that you should certainly check out and was inspired by a Hacker News post.
UPDATE: The original Linkrdr is no longer active, but a new service is in the works. (Try these RSS readers.)