Hi Freinds, what is PIN? when does it required? one more thing, how to check whether i already holds it or not?
PIN is a serial that Google sends you when you reach a certain amount, so they can verify you that all your details are correct such as your address and bank acount
PIN will be sent to your address (as given in your adsense account) when you reached certain amount in your adsense account. I believe you need to enter the PIN number you received in your adsense account to prove you are the right person to receive the payment. then only you can get/withdraw your payment from adsense account. It is one time requirement.