Atom

Mass media / Media / RSS

Atom

Atom
An XML-based format designed to aggregate information, primarily from websites. Convenient for use in blogs, but can be used for any other news and periodicals on the Internet. An essential part of the specification is a protocol running over HTTP, designed to automate blogging.

- A data representation format similar to RSS with more features.

GData
Format based on Atom.
This format is actively used by Google, but Microsoft supports RSS.
It is Atom used in blogger.com, Google Safe, Gmail and other Google services.

Most RSS aggregators read Atom.