No Subject

I am starting to wonder if I really am a fan. I mean, I'm more into the 60s music and I bought a Who record (Greatest hits, actually) and I liked all of them so mu ch that I looked for them on the Web and the rest is history. But I've never seen them live, I probably don't know more than a quarter of their songs... I hear thngs here and I hear about songs that don't ring any bells! What is your definition of fan anyway?