‘Libera Scio’ was the title of a seminar organized by Wikimedia Nederland together with the World Esperanto Association (UEA) in Rotterdam. Marek Blahus and I presented the Wikimedia movement, multilingual Wikipedia and above all the secret ingredient of Wikipedia: free knowledge.
The UEA holds an open day twice a year in its headquarters; it is usually on Saturday, and on Sunday some guests from abroad still stay in town. For about a dozen people (age 20 to 70) joint us for a tight schedule with lots of information and exercises. The participants were not only impressed by Wikipedia’s size (and the size of Wikimedia Commons) but also by the many ways you can go wrong when it comes to copyright.