Google Plus Shortcut Keys List for G+ Users

  

    Space Ba              :-              Scroll down the stream

    Shift + Space        :-              Scroll up the stream

    J                          :-              Single post down scroll

    K                          :-              Single post up scroll

    Q                          :-              Jump to chat

    Enter                     :-              Start comment

    Tab + Enter            :-              End comment

    +/@                       :-              Mention someone in the comment or post.
   
    Backspace              :-              Back to last page