Feeds
RSS and Atom files provide news updates from a website in a simple form for your computer. You read these files in a program called an aggregator, which collects news from various websites and provides it to you in a simple form.
Posts: RSS 2.0 (default) or RSS 0.92 or RDF or Atom
Comments: RSS 2.0 (default)
New to syndication? Introduction to using feeds: http://en.wikipedia.org/wiki/RSS_(protocol)