When customers receive an invoice notification, they click on the "online payment" link. This takes them to the "Secure Payment Option" page.
This is really nice - an improvement. However, there appears to be no PayPal logo (just a link). (However, there is a Google Checkout logo and a link). Also, on this "Secure Payment Option" page, please consider including the item and description fields. Customers would prefer to not have to open an attached PDF to see what they are paying for.