Each listing has points associated with it. The total listing points determines the order listings are shown in, starting from highest and going down to lowest. Total listing points is the sum of natural listing points, and listing points entered by the tutor.
There are 2 factors that determine what the natural listing points are: 1. When your listing was activated, and 2. When you last updated your listing. The dates are placed in a formula that calculates the natural points (previously referred to as "priority rank") for your listing.