Another thing this website miss out on is that, with goodwill on both parts, Scandinavians can usually communicate with other Scandinavians in different languages. I am Norwegian, and if I meet a Swede, we can just talk with each other. I can't talk Swedish fluently, but I can understand Swedish to such a degree that it's no problem to speak with a Swede who is speaking Swedish.
However, this relationship of understanding languages can be asymmetric, and it's not always as easy for a Swede to understand a Norwegian as it is for a Norwegian to understand a Swede.
Check out this video on asymmetric language understanding from NativLang for more about this! https://www.youtube.com/watch?v=E042GHlUgoQ