Unintended side-effect of PayPal
The biggest problem that’s surfaced with shifting the majority of orders to PayPal for payment is in tracking advertising. There’s been a significant drop-off of hits to the thank-you page after making payment — customers are leaving after PayPal’s receipt page without clicking the “return to site” button. Since the thank-you page is where the tracking code is for completed sales, it’s showing a sharp drop in conversion while the number of sales has actually increased recently. Now I know that if I develop my own ad tracking software, it’s going to need an API for other software (like a shopping cart / order fulfillment system) to send information about completed sales.
