What Bert is telling was the intention. It's not a problem when sometimes a mistake is made in the language, make that mistake myself
But lately I see more members starting topics in Dutch.
All Homeseer forums are Dutch
"Domotica voor beginners" is Dutch
"Groepsinkopen en Ideeen" is Dutch
"Domoticaboek Heino Peters" is Dutch
"For Sale / Te Koop" can be both
All other are English.