A king is not determined by an election, even a silly poll that was created just to pass the time. I suppose you can call the winner of the poll "the king", but he's not.
The king is the one who has absolute power. The king of an online forum is the one who owns it, maintains it, makes the rules, and enforces the rules either directly or through someone to whom he has delegated the authority. The king can banish people from his kingdom whenever he wishes.
We already have a king, and everybody knows who he his, silly polls notwithstanding.