Firefox's Live Bookmarks feature does a fine job of keeping track of RSS feeds. Feed Sidebar is a free add-on that opens feeds in a sidebar equipped with a handy toolbar that makes it easy to search and sort feeds, mark them as read, and limit their age. It doesn't replace Live Bookmarks in Firefox; it augments the standard tool. But if you follow a lot of feeds, you'll like what it adds.
After a quick and trouble-free external download, we restarted Firefox. We clicked the RSS button on the toolbar, and clicked Feed Sidebar's left-hand … Read more