Dun-dun, SteemFollower does work and you have proven it by finding my post. From each vote on SteemFollower you get points that are automatically spent on promoting your posts. You do not have to do anything and just have it enabled - your last posts are promoted on SteemFollower until you run out of points.

The points you redeem have certain total value and it reduces with each vote you receive, depending on how valuable it was.