As diferenças entre o Pandora e o Last.FM

«Taking the nature side, Pandora's recommendations are based on the inherent qualities of the music. Give Pandora an artist or song, and it will find similar music in terms of melody, harmony, lyrics, orchestration, vocal character and so on. (...) On the nurture side (as in, it's all about the people around you), Last.fm is a social recommender. It knows little about songs' inherent qualities. It just assumes that if you and a group of other people enjoy many of the same artists, you will probably enjoy other artists popular with that group. Like Last.fm, most music-discovery systems have been social recommenders».

fonte: Steve KRAUSE, Pandora and Last.fm: Nature vs. Nurture in Music Recommenders, 30/01/06