- Go to the PayPal Instant Payment Notification (IPN) simulator.
- As the IPN handler URL put in http://samples.geekality.net/ipn/listener.php.
- Choose a Transaction type.
- Put in some interesting values (or just leave the defaults).
- Hit the Send IPN button.
When you've gone through the procedure above, you should find it in the log below (newest on top). Remember to refresh the log to see the latest entries =)