Looks like either Rihanna or Ke$ha will be #1 on the hot 100 this week. I'm guessing Rihanna. Next week it will be P!nk most likely. Although it's hard to tell with Katy, Ke$ha, Rihanna, and P!nk all performing at the AMAs tomorrow.

I'm going to guess P!nk and Rihanna will have the most popular performances of the night since Rihanna is opening and P!nk always puts on a good performance. So, yeah, the battle is never ending for the four of them. I love it, though. All four of my girls smashing at the same time.
