RSS (RDF Site Summary or Rich Site Summary) allows users to subscribe to feeds from websites and have headlines and summaries delivered in a single place. RSS feeds can be read more quickly than visiting each website individually. While scanning headlines is faster than full pages, subscribing to too many feeds may become overwhelming. RSS uses XML tags to tell feed readers how to display the information. Both websites and RSS feeds are text files, but RSS relies on RDF and XML tags to organize the content for aggregators.