you're right in both aspects. I hadn't thought of that before.
However, instead of using http://test.moodle.org another option is to use http://demo.moodle.org (for example the Features Demo course http://demo.moodle.org/course/view.php?id=5). You could even download the courses (e.g. http://demo.moodle.org/file.php/1/backup-features_demo-20081114-1356.zip), install them on a development machine, and choose a prettier theme. Just a suggestion.
Moodle community sites
Moodle documentation: More screencasts!
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