This happens to me all of the time when I browse their site. The pictures in that section will be way off. One time, like when "OMG" went #1, they had a picture of Rihanna and when you hovered over it, it said Usher. And when "Femme Fatale" debuted at #1, the picture they showed was Katy's, and then Rihanna's, and then a couple of others. It's really silly. They need to work on that.
And when "Femme Fatale" debuted at #1, the picture they showed was Katy's, and then Rihanna's, and then a couple of others. It's really silly. They need to work on that. 
just sayin'