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.