Those of you that currently have more than one site/store that uses PayPal for payments, how do you handle the IPN stuff?
Do you have a single IPN that sends transaction data to your sales database(s) or, do you give each individual site/store its own individual IPN?
Are there any advantages / disadvantages to using single vs. multiple IPN files to record the sales data flow?
Any advice you may be able to offer would be greatly appreciated
