While I agree those pesky dollar signs can make something a little difficult to pronounce, I think Ke$ha is big enough now that even Britney Spears might know who she is... After all, Ke$ha was featured on a remix of Till the World Ends. During Thursday night's episode of X Factor, Britney referenced Ke$ha while critquing CeCe Frey's performance, calling Ke$ha Keisha. You'd think if you had an artist on one of your tracks, you'd take the time to learn their name. Or maybe, just maybe, this is what we can expect from Britney during the live shows and if that's the case, I'm all for it! It's entertainment folks! Now, can we just get a stylist to show up and work on Britney before these shows?