In case anyone working with/at Pandora is reading this: you guys are awesome. I've gotten more new music from you than anywhere else. I noticed you seem to have changed your algorithm lately (At least, in the past few weeks I've suddenly gotten a LOT of new music) and I like it a lot.
Except in other countries than the United States, United Kingdom and Germany.
I have to admit that listening to last.fm is a completely different experience. There are a much deeper selection of tracks and I was thrilled to hear a 24 minute DJ Shadow song.
I wish pandora the best, and I was ok with the occasional video ad. But every time I change a station? If it was every 3rd time I might have put up with it.
My main complaint with Last.FM is that it makes me putting a label on what I like in music, and then match that up with how other people label music. I know next to nothing about music, I just know I like certain songs and dislike others (Ok, I know a little more than that, but not much). When I used Last.FM I would pick a genre/tag I liked/artist, listen for a while, and get bored with it because it either sounded exactly the same or else I picked the wrong tag and it turns out that wasn't the factor in the original music I liked.
Also, I use Fire.fm firefox last.fm toolbar which is great as it puts play controls right into firefox and last.fm does not need to be open!