I used it for all of one week. I didn't really find it all that useful. For instance, when listening to Dir en grey or D'espairsRay it'd give me crappy Jrock suggestions like Alice Nine or GazettE. Or when listening to Bill Evans it'd give me John Coltrane as a suggestion (I don't like Coltrane's style of jazz, way too noisy and clashy). So I uninstalled it <.<