So, I've been using last.fm for 8 months or so.
http://www.last.fm/user/bergmayerI'm thinking of trashing it because it encourages me to worry more about keeping track of music than about enjoying it; because it often gives me hassles with syncing from mobile devices (I have do do a hyper-hacky thing to even sync up with my hutPhone); because it crashes and seems to sometimes randomly change around information like "total tracks played"; and because of my hyper-OCD nature I spend way too much time worrying about the accuracy and completeness of its data than is healthy.
I am kind of person who, once set up with something like this, will hesitate before listening to the radio because doing so will make my music listening history on last.fm inaccurate. When I was a kid I would throw away dubbed tapes friends made me if a song was cut off the end. I can't help it.
It's fun to follow what *other* people are listening to, but that doesn't mean I have to mess with the thing myself. The recommendations it gives me are not very good. Just obvious next steps from what I already like, when I prefer to be challenged with new sounds.
It's kind of cool to see charts of my most listened to stuff, but it seems like an iTunes plugin could handle that.
So, do any of you fellow last.fm-ers find that it is actually useful? It seems like it could be cool if you are the kind of person who just installs a scrobbler on one computer and doesn't worry about having super-accurate information.