Steve Rubel pointed out the joys of FeedRaider a couple of days ago, and it is well worth taking a look.
Ideal for those new to RSS, Feedraider allows you to create bespoke pages by adding RSS feeds and works a little like popurls, only you define where the content comes from.
If you want to set up a web-based RSS aggregator then it really couldn’t be simpler. It is also perfect for sharing news sources with friends and colleagues.