It looks like the time has come to shut off the lights on some of Nintendo's older services. Nintendo has announced that they will be discontinuing Nintendo TVii, Wii U Chat, and Miiverse on November 7th 10pm PT. All functions associated with Miiverse on Wii U, 3DS, PC, or smart phones will cease to function across all titles. For example, the messages left in New Super Mario Bros. U or WaraWara Plaza will no longer be shown. A workaround is planned for Super Mario Maker that will allow players to continue uploading courses.
After November 7th, players attempting to access these services on Wii U or 3DS will receive error codes.
If you're left scratching your head regarding Nintendo TVii - the service was discontinued in North America two years ago, but continued to operate in Japan.
If you have made some awesome memories that you want to share, Nintendo is offering a limited window of time during which people can download their post history to PC. You can make a request by visiting this page and clicking the "Request Post History" button at the bottom. Nintendo released more information about this process:
By making this request, you will be able to download your posts – plus any screenshots saved to your album – to your PC after the Miiverse service has ended. To use this download service, you will need to have a Nintendo Account linked with your Nintendo Network ID, and must make the download request before the Miiverse service ends.
[...] From all of us at Nintendo, we sincerely thank you for supporting Miiverse all these years. We hope you’ll continue using Miiverse until the service ends.
If you make your request, you will receive an email when the service closes down that includes a download link containing gall of your posts and screenshots. Unfortunately, this will not include any comments made on your posts, messages sent to and from friends, deleted messages, or anything that violated the Miiverse Code of Conduct.