"Assumptions run rampart here. Usually false ones, in case you hadn't noticed."
It rarely hurts to request proof.
Well, I am obviously rather late here so I'll be brief:
These are some excellent rules. For that very reason I suspect that they will be ignored, and I hope that they are.
TK's repeated insistence that Edvard discuss the weather with her is obviously her way of insinuating that Edvard does not hail from Scandinavia. Well, I assume that Edvard can Google "the weather in Stockholm" just as fast as anyone else here can, so the question is redundant.
As for the apparent question of Edvard's nationality: Edvard speaks immaculate English and I imagine that that is what arouse TK's suspicions. TK has never left Australia, see, so she has no knowledge of the outside world. She would therefore not be aware that most Scandinavians speak excellent English. And that their prose is grammatically and structurally precise - as is Edvard's.
Now, a Scandinavian who is trying to conceal his identity would likely reject this style and opt instead for the slang he has heard in other nations he may have lived in, visited in, or hell, just witnessed on this very forum. He'd slip from time to time, and revert back to the perfectionism drilled into him from his school days. I myself disguise my nationality by throwing in colloquialisms popular in five of the countries that I have lived in. Edvard doesn't feel the need to do this, yet his prose is consistent with that of a Swede or a Norwegian.
The real question would be why Thrill is so desperate to "prove" that on a board of self-confessed liars, one particular poster is lying about his nationality.