I think gRomoZeka's idea is good; it solves the problem that Ramil described, and provides interesting info as well.
I'd find it quite interesting to know what people's actual native languages are. I've been really surprised at some of the people who stopped by here and it's interesting to hear who wants to learn Russian, how far they got and what their motivation is. One thing that stood out is how many French people stop by.

In the case of people who study Russian and don't know English: If they can't speak English OR Russian, then this might not be the right forum for them. I suppose they can try the sub forums for specific languages but they are not often used!

There ARE forums on the internet for French/German/Swedish/Spanish/Polish speakers who want to learn Russian. Probably many more languages but those are the ones I've seen links to, or visited.
However they a bit less active than this one, and there are fewer native Russian speakers who use them.
So if the person isn't able to express themselves at all in either English or Russian then they should find a forum in a language they understand.

And here at this forum, the most appreciated people are the ones who are fluent in both Russian and English because they are the ones who can really teach others something....