Clinton to SoS?

Lots of buzz on the internet last night about rumors that Hillary Clinton might become Barack Obama's Secretary of State. I'm with Josh Marshall on this: being a senator, even a senator with comparatively low seniority, seems like a much better gig both in itself and in terms of her potentially running for president again in 2016. But maybe there's an angle we're not seeing, or maybe—maybe—she just genuinely wants the job...