Google+ Stream and Buzz

Google Takeout provides a way to export your Buzz and Google+ Stream posts as HTML.  Included in these HTML documents are special class attributes, or microformats, which give context about what each piece of information contained in the post means.  This approach makes the contents easily viewable by humans and similarly easy to parse by computers.  The list of microformat classes used in the HTML output are listed below:


Classes that conform to the hCard specification:
  vcard - The top-level container for data representing a person, organization, or any entity defined in
vCard
  fn - The full name of the author of a post or comment
  photo - A photo of the author
  url - The profile URL for the author
  uid - A unique identifier for the author
  geo - The geo-location of the post
  adr - vCard address string
  latitude - vCard latitude
  longitude - vCard longitude

Classes that conform to the hAtom specification:
  hfeed - The top-level feed in Atom, this is the container for all parts of a particular post, including comments, photos, attachments, etc.
  hentry - An individual entry in an Atom feed -- usually a single post or comment
  entry-title - The title for the post/comment
  entry-content - The HTML content of the post/comment
  author - The author of the post/comment, specified using hCard
  published - The date that the post/comment was originally published
  updated - The last date that the post/comment was edited
  id - The ID uniquely representing an post/comment

Classes derived from the
Activity Stream Atom spec:
  activity - Denotes an Atom entry that contains data about a post
  service - The service from which this activity came from -- either Buzz or Google+

Classes derived from the
Google+ Platform JSON data format:
  comment - Denotes an Atom entry that contains data about a comment on a post
  liked - Users who liked, or have +1ed, the post
  reshare - Users who reshared the post.
  visibility - The visibility of the post within Buzz/Google+
  attachment - Other media or links embedded in the post
  object-type - The type of attachment to the post
  original-content - The text of the post before being html formatted

Other classes used within the export format that do not correspond to any specification:
  permalink - The permanent URL of the post or individual comment
  reshared-from - Text describing the original author and post for a shared activity
  map - An image of a static map to the location, if a location is included on the post
  annotation - Commentary information from the author on an activity shared from someone else
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