Not sure about Solstheim but I know the Skyrim forums belong to Morrowind.
You mean Bloodmoon forums? Yeah, that's because it was an actual expansion pack for Morrowind.
And to whomever said it was a vassal state of the Empire now, thanks, that seems likely. (And it's also supported by the maps)
EDIT: I bet Solstheim is based on http://en.wikipedia.org/wiki/Svalbard IRL. No wonder it's confusing. (It has been part of Russia, Denmark, Norway, both Russia and Norway split-down-the-middle style at some point and now it's fully Norwegian)