The celebs that appear frequently are doing so because they don't have a job, and would like to get one, but the dancers are now becoming more well known then some of the third rate celebs.Edyeta, Karina, and Julianne are not only smoking hot, but they have more celebrity "cred" then their partners. People may vote to keep the professional dancers around as opposed to the D listers.
Sorry to see that no talent, big butt, slacker Kim Kardashian, get the boot. She was fun to make fun of, and other than shaking that her big butt has no dancing talent.