Cool little walkthrough of a basic Guile program. Guile needs more tutorials and introductory material like this.

To build on that example, it might be cool to show off Guile's pattern matching capabilities when you are checking the list of program arguments:

    (use-modules (ice-9 match))

    (match (program-arguments)
      ((_) (display "Not enough arguments\n"))
      ((_ file-names ...) (for-each do-stuff file-names)))

The 'match' macro is one of the most useful things I have ever learned to use. No more car/cdr/cadadr/etc., just use match!

Edit: The title should be edited to say "(2012)", I think. I wasn't paying attention and thought this was a new blog post.