An online resource in English is much more international in effect (as in "facilitating communication across national borders") than one in just 1 or 2 or 3 other languages. English is a decent language to use for any number of third parties who can't be bothered to translate from each others' languages. Therefore, setting up something with many sections in various languages is prohibitively expensive by contrast (unless your project is language-centered in the first place, maybe).