PayPal and Back Button

annoying and possibly scary to customers

[ngentot]

For those who use PayPal to receive payment, what do you all think about the fact that you cannot use the browser's back button once you're on PayPal's page? It would show "Warning: Page Has Expired".

Don't you think this would confuse or even scare many customers?

Why can PayPal fix this?

How do other payment processors do it?

[Raymond]

Paypal does this on purpose. All online banking sites use this feature because having a previous page cached post major technical and security concerns.

[amznVibe]

By the way, you can use the back button safely in Firefox.
There is always the cancel button which you can tell PayPal to send back to your page.