c|net covers the story: Microsoft has teamed up with Creative Commons to create a tool one can add to Office.  This new tool makes it easy to embed a Creative Commons copyright license in the document one authors in Office.

From the article:

Currently, some Web-based tools let people associate a Creative Commons license with information. But Microsoft is the first vendor to embed a license-selection option inside its applications, said Lawrence Lessig, the founder of the Creative Commons and a Stanford Law School professor.

“This is important to us because a huge amount of creative work is created inside the Office platform. Having a simple way to add Creative Commons licenses obviously helps us spread those licenses much more broadly,” Lessig said.

As Brett Frischmann sums it up, “Very neat!”