1 year? How do you know that? I thought the servers were going to stay online for a much longer time :/
Edit: Just found
this thread on Reddit, which is one year old but should give you information about the time Ninty will shut down SMM's servers. I think that we still have time, as Wii game's servers were shut down on 2014, so we still have a few years (at least) to enjoy playing and sharing your levels.