This document discusses RSS (Really Simple Syndication) feeds, including how they work, common versions, tags, and conversion modes. RSS is an XML format that allows users to track updates to favorite websites. It functions by websites generating an RSS feed file that lists recent updates or additions, which can then be read by RSS readers and aggregators. Common RSS versions are 0.91, 0.92, and 2.0, with each containing core tags like title, description, and link. RSS feeds can be converted between modes and formats.