article_snippet.sent: We're testing new features in this space that let you and your friends stay up to date on all the things that make up your day.
article_snippet.sent: because they don’t show up in the main News Feed.
article_snippet.sent: they do can just be seen in the sidebar and expire after 12 hours – allowing only the person who posted they do to access they do again.
highlights_snippet.sent: Feature lets users write a brief update to share with close friends .
  
highlights_snippet.sent: Such notes last for 12 hours and can be seen in the sidebar of the app .
  