Welcome
Wombat!
You're right, language barrier is a real issue but it's true with all forums...
At the time of the website creation (2003), we chose to write in french because most of the arcade websites were in english language only and that we wanted to touch the Belgian players and operators (who often speak dutch and french but barely english, especially on funfairs). We decided from the start to simultaneously publish our pages in english as well so dutch speaking Belgians could read it too. We didn't chose dutch simply because our knowledge of the language is far too limited so would have taken too much time to translate our texts to dutch.
Now the reason that most of the forum is different. At the beginning of the forum, a small core of belgian members quickly formed. As they were all french speaking, all their post were in french. After a while, many members from France joined, posting in french too. I think this is why french remained the main language. I imagine that if the first posts were in english, english would have become the default language used here...
Now as
t3k1lla says, nothing prevents you to write in dutch or english. You'll get reply in english which you can read. And he's right in that we don't try to become the biggest arcade board. Here, many members know each others in real life. Atmosphere is often bad on large arcade boards where many members behave badly towards others. What's most important to us is the kindness (quality?) of our members, even if that means having a smaller community. This is a place where everybody feels good and welcome, that's the most important.
I agree to you, mltilanguage forums never worked great. One language always overwhelms the others in the end. But separating languages (as seen on some forums) is not a good solution either because you divide the knowledge.
Totally switching the website to english has already been envisaged because translating texts is very time consuming and writing the same thing twice is never fun. We'll do a poll to see how many visitors read french only.
But switching the forum to english may scare our more faithful members away... So I'm not sure it's a good idea. Management's posts are written in both french and english but each member is free to write in his preferred language. He only should be aware that he'll get more reply if he writes in english than in dutch for example. But even if he writes in dutch, most of belgian members will understand and if we don't reply in dutch (because of too limited knowledge) we'll be happy to reply in english if we can help.
Anyway, you can believe me: If we had to do it again, we would choose english only for both website and forum. It would have made things a lot easier!