Yeah, I don't like the Beatles, either. And it's gotten better. I found that Pandora is a bit better than Slacker with respect to the dislikes. I agree, though, the personal touch isn't there with Pandora.
And even more for me there’s just no reason to use it. Currently the MP3 library is 316GB, there’s a copy of it on the PC at home and a portable drive at work. For me to listen to Pandora I’ve got to be at a computer without the library, last time that happened the sister-in-law died and being the resident geek I was tasked with closing accounts and stuff, that was almost 2 years ago. I’ve never been much of a radio guy, I respect the technology of Pandora and it can be kind of fun to try to stump it (though I’ve never succeeded), but I’ve got the library.