... PmWiki / . visitors (intermediate) Web feeds are a convenient mechanism to let visitors be notified of changes to a site. ... Web feeds are commonly recognized by terms such as RSS , Atom , and web syndication . ... Using a feed action such as ?action=rss or ?action=atom on a trail generates a web feed (often called a "channel") where each page on the trail is an item in the feed. ... The feed url will be the name of a trail page with ?action=rss or ?action=atom added to the end of the url. ...