Ditto... From the demo, it looks like it's simply remote logging the data to cloudmine. I'm sure it's doing something cooler than this, but I don't quite see it.
The idea is that you can now have 3rd party services interact with your CloudMine powered app from the server side. From there, you can update data/state, send push notifications, or do whatever makes sense for your app.
That particular example is for a contest we are running with Nexmo http://blog.nexmo.com/post/18010293444/contest-cloudmine-nex....