“The question of what music charts should count has defined a debate in the music industry that has been going on for several years. Because what gets counted — i.e. what data gets included and weighted in a chart — determines what artists are praised as “successful.” Most recently, a controversy erupted around the Jay Z and Samsung partnership because Billboard decided that it would not count the album downloads offered through a mobile app. One million copies of “Magna Carta Holy Grail” were omitted from their stats on the album.”
https://soundcloud.com/upwardspiralpodcast/deep-dive-3-do-music-charts