The learned lesson seems to be "Do not 'mine' anything still under copyright by an Netherlands or Belgium publisher without prior written consent." Scott Catledge

Even a mere list of lemmata is the result of a serious decision making process, consisting a.o. of defining selection criteria, defining the spelling of an entry (in historical dictionaries), etc. And it is usually based on a corpus of texts, sometimes compiled by the lexicographers themselves.

It has been tested in court. Someone had published a cd with a rhyming dictionary and had used the list of lemmata of the Van Dale dictionary of Dutch. Van Dale won the law suit. It was about 10, maybe 15 years ago.

Katrien