@freemo

when we are talking about languages here, we are talking about the content of " foreign languages". a lot of times, one language stands for one culture.
English as the most universal language in the world. i understand why some of people know English at least the basic of them but still don't post in English instead of the first language on social media.because they feel more comfortable that way. when we use the tag language to ask people's view, their first feeling is they can say any language they want.
what i try to say is the best way is can only affect, can not be forced.
before sort out this spam issue, or enhance the quality of this instance, it's necessary close the register before it's getting totally out of control. people here can invite new user but you can raise the threshold of register like set up some questions about STEM or ask what language they prefer .

@saxnot @jump_spider