timo You'll never please everyone and it's pointless to try!
The thing I like about the Last.fm integration is that whilst I could go through my listening history on Last.fm, it's so much more convenient and relevant seeing it on entries in Diarium.
Music is a big thing for me. I listen to an extremely wide range of genres and artists, and what I listen to is usually dictated by the season/weather and my mood, so it's amazing to look back over entries and see the gist of what I was listening to that day.