RSS

RSS is a Web content syndication format, and a dialect of XML. All RSS files must conform to the XML 1.0 specification, as published on the World Wide Web Consortium (W3C) website. Formerly Rich Site Summary, RSS has now been hijacked by Dave Winer and renamed Really Simple Syndication, of which there are umpteen incompatible versions.

Example Feed
  Liftoff News http://liftoff.msfc.nasa.gov/ Liftoff to Space Exploration. en-us Tue, 10 Jun 2003 04:00:00 GMT Tue, 10 Jun 2003 09:41:01 GMT http://blogs.law.harvard.edu/tech/rss Weblog Editor 2.0 editor@example.com webmaster@example.com Star City http://liftoff.msfc.nasa.gov/news/2003/news-starcity.asp How do Americans get ready to work with Russians aboard the International Space Station? Tue, 03 Jun 2003 09:39:21 GMT http://liftoff.msfc.nasa.gov/2003/06/03.html#item573 Sky watchers in Europe, Asia, and parts of Alaska and Canada will experience a partial eclipse of the Sun on Saturday, May 31st. Fri, 30 May 2003 11:06:42 GMT http://liftoff.msfc.nasa.gov/2003/05/30.html#item572 The Engine That Does More http://liftoff.msfc.nasa.gov/news/2003/news-VASIMR.asp Before man travels to Mars, NASA hopes to design new engines that will let us fly through the Solar System more quickly. Tue, 27 May 2003 08:37:32 GMT http://liftoff.msfc.nasa.gov/2003/05/27.html#item571 Astronauts' Dirty Laundry http://liftoff.msfc.nasa.gov/news/2003/news-laundry.asp Compared to earlier spacecraft, the International Space Station has many luxuries, but laundry facilities are not one of them. Tue, 20 May 2003 08:56:02 GMT</pubDate> http://liftoff.msfc.nasa.gov/2003/05/20.html#item570

Atom
The Atom Syndication Format is being developed as a more mature method of syndicating information.