"Few features are as essential to modern Web browsing as feeds.
With the rise of social networking and file sharing sites, feeds
have become the only way for many people to keep up-to-date with
all the sites that interest them. Certainly feeds are more
efficient than resolutely clicking dozens or hundreds of bookmarks
one after another. To satisfy the need to feed, developers have
written dozens of Firefox add-ons to help you view both classic
feed formats and sites that lack a feed.
"By default, Firefox treats feeds as bookmark folders in which
you must open each item separately, with only the first 40 or so
characters of the title visible..."