In response to several queries: if you'd like to get the source for both the Version 3 material (the old static HTML pages) and the new Version 4 stuff, they're both in our Subversion repository at http://software-carpentry.org/swc. The whole world should have read permission; please let us know if you run into any problems.
And if you're minded to contribute material, we'd welcome help: please contact us by email to talk about what you could do.
Dialogue & Discussion
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