I'm going to stop with the other languages because I don't want to bug anyone, but I have to say I think it is rather draconian to ban any non-English languages in what is purportedly an open forum ... and actually I find it rather unfriendly and unsupportive to label non-English languages as "gibberish."
What is the saying? Divided by a common language?
For what it is worth, whilst english is the dominent language here on Dance Forums (it does not interest me what other Forums experience in this particular aspect) yes, other languagues have been discussed, mentioned and even phrases/sentences used. However, entire posts were not made in that language.
If you should decide to do some 'research' of the past posts here on DF, you may actually discover that I have quite an international outlook and have an interest in other countries and cultures, including... <drum roll please> non english speaking ones. But, you knew that already.
C'est la vie.