Playing with a good partner, but against random BBO opponents who are strangers to each other and who have not discussed any conventional meanings.
Feel free to criticize the 3♠ call if you like, but the question I want to focus on is whether or not North should double 4♦. It is obvious that partner holds few (if any) ♦. He probably does have some tickets here, but he showed no interest in supporting ♠. I think it is safe to assume that partner holds lots of ♥ and ♣. Even if I could employ the old beginners style to better communicate the hand by standing up and shouting "I DOUBLE YOU!!!"

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