In the Stack Overflow for Russian (beta), you can see the phrase на русском in the title, which I'm sure means in Russian.
However, I'm not sure why the site expresses the phrase as
на русском. Specifically,
It seems that
русскомlooks like instrumental (not sure but just I guess), but why does
наnot take either prepositional or accusative, which I learned
If you mean I speak Russian., you say Я говорю по-русски.. Is there any difference between the two word (