Online musical social communities are becoming more and more popular as time goes by. Nowadays, these social communities give folksonomy systems to their users, allowing them to play an active role by dictating musical tastes, popularity of artists and hit songs like it never happened before. Since it is the people, and especially the fans, that really determine how famous an artist can be or how a song can impact their musical tastes, these Web social communities are the ultimate form of capturing the perspective of the fans. Although the widespread musical communities give us more...