This content can be aggregated to be viewed even more easily by using a feed reader. I've written up an article on the best feed readers out there. A feed reader, or feed aggregator, is just a really simple way to view all your feeds at one time via one interface.
For instance, I have a Bloglines feed. I have all sorts of good stuff in there. Can you imagine how much time it saves me to have all these topics sent to me in one place rather than me searching it out?
In addition, all these people who have their sites syndicated on my Bloglines roll are enabling their content to be seen by me and other people who wouldn't necessarily find them in the search engines or directories. RSS feeds are a wonderful resource, and the uses for RSS are only just beginning to be realized; not only for search engines and searching, but in how we optimize our sites.