I use the Firefox extension called Brief to keep track of my favorite feeds. It comes with a database to save items in so that I can keep up with feeds at my own pace without worrying about missing items.
Screenshot of Brief: http://brief.mozdev.org/images/general%20screenshot.jpg
EDIT - Here's a screen of my current Brief setup (any graphical errors shown are a result of theme conflicts -- I'm using LavaFox Blue as my Firefox theme here). You can customize Brief to your liking if you have the know how.
Screenshot of Brief: http://brief.mozdev.org/images/general%20screenshot.jpg
EDIT - Here's a screen of my current Brief setup (any graphical errors shown are a result of theme conflicts -- I'm using LavaFox Blue as my Firefox theme here). You can customize Brief to your liking if you have the know how.