Hey Johnny,
myownmusic has a "Hit of the day! (HdT) function. "jet stream" was Hit of the day. Many people wrote me that "I wanna safe the world" would be worth a Hit of the day. We will see.
You can see the numbers of downloads, the total play time and the number of clicks by going on the detail site. Just click "Details" above the song cover.
When I upload a song I can decide: download able for all, disable for all or download after leaving your comment. I choose always the last one. That means it is impossible to download the song without leaving a comment.