[tomming]

Anyone have try small business with paypal or not?
I have a very important question.
Recently,I register an paypal account and create a "Buy Now Buttons" there.But then ..
I want to take customer to a continue their registration after successful checkout: How?
My website is an advertising network,let say each banner advertising is $10,they need to
click the paypal button to buy,but the problem is how to I make tem upload their image after
they successful checkout in paypal.?

[wirehopper]

In the PayPal setup, you can specify a URL to go to after a successful payment.

[tomming]

What is IPN
Instant Payment Notification

[wirehopper]

IPN is where PayPal alerts you after a transaction that occured. I've used it for subscription purchases - where it gets sent on renewal.

You don't need to use IPN for this, there are two redirect URLs - one for transaction completed, one for transaction canceled.