Hey everyone -
There's been random reports of photos/videos magically setting themselves back to private. We haven't been able to track it down for a while, but just today we figured out what was causing this.
The problem has been addressed, but please keep your eye out for it again just incase.
Sorry for the inconvenience of this, I know that a couple of super worthy photos/videos got bumped off of the homepage and missed out on the hype they deserved.