My need for a good rss aggregator is important. I depend on it to help me stay current on everything Ubuntu and Linux for the UWN. I had used the Sage addon in Firefox for about a year, but with the Hardy release using Firefox3, Sage was not available. A shame, because I really liked Sage, it allowed me to have my reader integrated with my browser. I finally have settled on Liferea. It’s a stand alone application that is simple, but very configurable. If you’re looking for a good rss feed reader to replace Sage, you might take a look at it.