Ok Troy here, and have started a study to find out first hand if the water really does go down the drain in opposite directions, depending on which hemisphere you are in. But I can only do the northern hemisphere for now so I am depending on you to do your own study and email me your findings. If you could do this by Saturday night I will then post my findings Sundayish. I am after the direction ( clockwise or counterclockwise, looking from above ) when you pull the plug in your sink or bath. Try to do more than one for a more accurate result.
I have done 5 so far and not all went the same way. Only 4 out of the 5 went in the same direction