I don't get it with their ranking system. I have a 4 star app with 5 votes and been at the 400-500 spot for few months. Couple weeks ago with same amount of votes and still at 4 star, the app ranked 140 in Communications. The sales started to shoot up and then couple weeks later with same votes and still a 4 star app it dropped back to the 450 range. Sales are down
It was good while it lasted, but I don't get what happened with sudden drop in ranking.