I'm using a small number of Buy Now buttons on my website, and using IPN to gather the details of the customer and send a customized email to them when they complete a purchase.
The "Pay .... as a guest" section of the Paypal payment page has a form for the customer to type in their name and address and card details. However, I really need to know if they are a business, or buying for busines use - but there is no "Business name" field for them to fill in. The IPN information therefore always has the payer_business_name variable either empty or absent (actually I do occasionally get a payer_business_name value but I think this may be when the purchase is made by a business paypal account which has a business name recorded against it).
Is there some way to force a Business Name field to be added to the pay as a guest section of the payment form, which will encourage customers to type in their business name (and have this text passed to IPN as the payer_business_name) ?
