Our blog content is now under a Creative Commons license. The version of the license we chose was pretty much what we always told people they could do anyway. There are some rights reserved which you can read about.
We have not done the same for our main site as the issues are a bit trickier given almost 14 years of content, some of it generated with custom agreements, but you can always ask us about content there, and we are fairly liberal with granting permissions.