I dont understand the hate for this girl... No one has ever considered her an artist. Hell, I don't even think she considers herself an artist, rather an entertainer. Plus, most of her music is producer based, the vocals are really only a minor factor. With that said, "Blackout" is one of the best pop albums I've heard.
I think this Poptimist article over at Pitchfork sums up that album pretty well...
Poptimist #10 | Pitchfork