This Google search led to this post from Nick Bradbury, which led to this extension for Firefox: Feed Your Reader. With proper link credit given, let's carry on to why this find might be important to you (after a short background explanation).
Firefox's Live Bookmarks feature serves as an elegant introduction to feed aggregation for the novice user. And its simplicity largely reduces the learning curve for syndicated content.
This said, I'm not an average user when it comes to Atom, RSS, etc. I've got 270 subscriptions at the present moment in NetNewsWire, my client of choice.
Feed Your Reader allows you to use the RSS Autodiscovery in Firefox to launch external aggregators...
By taking control of the Live Bookmarks button, the Feed Your Reader extension has provided an elegant advanced solution to news aggregation outside of Firefox.