and this my friend is why i hope you are not a web developer. you need to dynamically create a address that directs to your main wallet address that also holds labels and your IPN link.. so when some one sends payment to that dynamic address you created it will send the confirmations to your IPN script and you can database it as need be.. either save it in a database saying you received payment from x person in amount of x... or when they want to buy something, you will store the information and distribute them a dynamic address and then cross reference on the notifications to show x person has paid... you can set it up to not complete payment until (6) confirmations so there is no way they can exploit the payment method.