I used it PUREPOSELLY just to drain my rupees.
There's something wrong with my deviated mind: if I see a bush I slice it. If I see a Pot I break it. So I ALWAYS end up with my wallet full. It kinda annoys me. Maybe it's because I used to play Mario games and it would make no sense to leave free coins there, so in Zelda I have to pick every rupee I find, I feel bad If I leave them on the ground... But there are too many! Then when I got the wallet full I complete some side quest and have no reward, bacause it was just worth rupees. I don't know. only the NES and DS games work fine for me about rupees.