Miiverse users now have a new way of communicating with their friends and followers. Starting today, a newly introduced update allows for messages to be posted directly to your friends and followers’ Activity Feed.
Nintendo of Europe passed along the news earlier today:
Feel like posting out of the box? On #Miiverse you can now post directly to your (and your friends' and followers') Activity Feed!
— Nintendo of Europe (@NintendoEurope) September 11, 2013