Outside of a dog, a book is man's best friend. Inside of a dog, it's too dark to read.
There are probably over one million RSS feeds published daily on the Internet, if you include all the webloggers, news sites, Slash sites, and custom channels from crazed content management systems. Add the RSS feeds made by ad hoc searches, collections of live data, and randomly generated MP3 streams, and we're suddenly talking about the sort of information overload that RSS feeds were initially designed to fix. What we need is a catalog, a collection where RSS feeds can be classified and searched, and where users can go to find the feeds on subjects close to their hearts. What we need are directories and their slightly more advanced brethren, the aggregators.