Presumably the information in the 'payment received' email would be something like 'you've recieved funds from Bitinstant'.
Do BitInstant have any plans in developing this so that there would be relevant information in the email received so that it could be associated with a particular payer (suppose I wanted to buy something from eBay using this - I would need to let the seller know that the payment really is from me even though it came via BitInstant).
Hey, you can essentially choose which paypal email address to send this to, so if you send it to someone with no paypal account, paypal will email them telling them they received money and they can 'claim the funds' by opening an account. I can also put notes in that email other then "Thank you for your order" Right now, you'll have to email me to do that, but if theres a demand for 'custom memo field' we can easily add it.
Thats the game plan!