What can you do with the friend codes on Pokemon diamond?

Question

my friend code is 0302 1226 4181 and my name is Bradley

if you have the game will you leave your friend code i dont have any on my pal pad :(

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Answer 1

my name is IIsHoRt

and my fc is 4597 1185 1318

Answer 2

you register them in your palpad

Answer 3

U can trade battle and such with people register theyres in ur pal pad and they have 2 reg. u. My players name is FARAZ all capital and my FC is 0473-9388-7972

Answer 4

My fc is 0645-5023-47707 and my players name is Dawn and I am a guy in real life but I picked a girl because the guy looked g*y and i have pearl not diamond

Answer 5

ya my name is emilio and my fc is 3351 5815 4627