Amazing is the word I would use, too. The lists of fish containing and not containing thiaminase, the habitats etc. are extremely useful. I don't speak Dutch either, but my first language is Swedish and I speak a bit of German too, so it's not an overwhelming task to understand it, even if I might miss some of the nuances.
I put together a Finnish site (mainly for beginners/dummies) a while back and it doesn't even come close to being as informative (it's a bit long-winded). Do you mind, Thamnophis, if I copy some of your ideas?
Not any the contents, of course.