RSS (Really Simple Syndication) is a family of Web feed formats used to publish frequently updated works in a standardized format. An RSS document (which is called a "feed") includes full or summarized text, plus metadata such as publishing dates and authorship. RSS feeds can be read using software called an "RSS reader", "feed reader", or "aggregator", which can be web-based, desktop-based, or mobile-device-based. The user subscribes to a feed by entering the feed's URL. The RSS reader checks the user's subscribed feeds regularly for new work, downloads any updates that it finds, and provides a user interface to monitor and read the feeds.