Let me catch up for you Luis: = )
Kanye West - 9
WORST attitude on the face of the planet, if it wasn't for the fact that I could admit that I enjoy some of his music, he would be utmostly a 10 ("Diamonds")!!! Although, his music is just full of samples anyways (he makes it sound like he is sooo original and amazing too). Also, his cocky attitude and pure stupidity in the Hurricane Katrina incident last year astounded me and my distaste for him only furthered with his appearance on "Rolling Stones," masquerading as Jesus. Anyone who thinks and acts like they are better than others are pathetic (see his rant about his lack of Grammy's, which I might add is VERY justified).
Hilary Duff - 4
Some of her music is decent, but lately she has been acting a bit stuck up and she is dating someone from Good Charlotte? Didn't she call out Kelly Clarkson last year? It probably doesn't help that she can't sing to save her life and she has done something to herself in attempt to look prettier, when in reality, she has turned herself in a farm animal or more notably a horse.
Bon Jovi - 2
I don't necessarily dislike them, as I don't follow their music, which has never been interesting to me in the least.
Nickelback - 3
I usually like some of their music, but it is sooo unoriginal. In all honesty, "Photograph" and "Savin' Me" sounds exactly the same to me.
Madonna - 7
The combination of her overratedness as the "Queen of Pop" and the way her fans worship her have made me dislike her. Her music used to be good, but lately she has done nothing but try sadly to be sexy in a rather "saggy" way. Although, I must say that it has been hilarious reading wut she tells her children about why she kissed Britney Spears ("transfering pop princess power from mother to baby princess") and banning her children from watching TV, in fear that they somehow see "Erotica." LMAO. Don't forget Scientology! lol, anyways, her most recent endeavor is wut really earns herself a "7" from me, crucifying herself on her tour in an attempt to be controversial, when all I see is a disrespectful bitch trying to sell tickets.
Sorry guys for my rather harsh words.

Don't forget to edit those #'s Luis.