What does good on you mean in Australia English?

I've heard lots of good on you in different contexts and got confused. I looked up in the online dictionary. it said it's equals to 'well down'. however, I heard someone response 'good on you' when one person said he was watching soccer last night. Is there any explaination here? thanks in... show more I've heard lots of good on you in different contexts and got confused. I looked up in the online dictionary. it said it's equals to 'well down'. however, I heard someone response 'good on you' when one person said he was watching soccer last night. Is there any explaination here? thanks in advance.
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