What does the Heart button do in Xbox Music?

[Windows Central]

Xbox Music is the phoenix that rose from the ashes of Zune. As you know, Zune wasn?t just digital media hardware from Microsoft. It was an entire ecosystem of music and videos that went with you from your smartphone, to your desktop and to the browser. The entire Zune brand and marketplace was more or less killed off in late 2012 so that Microsoft could instead focus on building Xbox Music and Xbox Video.
Microsoft learned a lot from doing Zune. They made a few mistakes here and there, but overall there weren?t too many complaints from users about the service itself. It definitely laid the foundation for Xbox Music. You?ll even still see relics from Zune in Xbox Music, like that little heart button.
What does that thing do, anyway?

Full story from the WPCentral blog...

 

[BIGPADDY]

I think I read if you play random it will pick your hearted music first or something like that.