Yeah, indeed, sometimes they seem to shove some bands down the throats. At least in the radio mode you can use the "thumb down", and I hope they're checking which songs I keep skipping. But, for the best results: try listening to other people Discover Weekly playlists. I got few folks on my list with a similar taste, so I won't hear anything offending on their Weeklies, yet the lists are quite often totally different.

interesting, but then the challenge becomes finding people who have similar tastes to me :\