I'm beginning to build up a musical profile on Last.fm - about 40 tracks listened to, quite a few where I've expressed my love for them. I thought I had quite narrow tastes in music, yet the music Last.fm brings to my attention seems little by little to be breaking down my prejudices, expanding my horizons quite substantially.
I recognise the names and begin to associate them with real sounds. There is just so much good music out there - I never really appreciated how much.
In fact, creating a musical profile like this is, in a way, like playing a musical instrument. Touching here, edging there, creating a landscape of meaning, exploring meaning. Its interactivity and revelatory qualities mimic the artistic process. There is a curious artistry in profiling.