Multiples IPN (Dynamically Setting the Notification URL)

Hi,

Please, may you add Multiple IPN support? (Dynamically Setting the Notification URL)

https://cms.paypal.com/us/cgi-bin/?&cmd=_render-content&content_ID=developer/e_howto_admin_IPNSetup#id091GJ202030

If you add this feature, we can use the same Paypal account on many sites.

Thank you