Palin + Fox: who wins?

The Globe's Matthew Gilbert observes, quite correctly, that landing Sarah Palin is a nice coup for Fox News.

Here's my question: is it as beneficial for Palin as it is for Fox?

Yes, I'm a Palin skeptic--but my uncertainty here has nothing to do with the woman or her politics. The issue, it seems to me, is that before this move Palin--on her own, in isolation--represented a remarkably potent political brand. By becoming part of Fox, doesn't she risk diluting her own unique potency?

Thoughts, readers?