Great question. The site may not be clear but the reality is anything but handwavy. The higher rated the song, the higher the probability it will show up in a s

Great question. The site may not be clear but the reality is anything but handwavy. The higher rated the song, the higher the probability it will show up in a set of songs to rank. This means more exposure since ranking sets of songs is the primary mechanism with which users find new songs on LaunchSong!