I am a designer who runs a virtual store in the marketplace. I plan to donate partial proceeds of the sales of my stuff to a charity on a permanent basis. I am thinking of Doctors without Borders but I have not made a final decision yet. What is the best system to do this? Also, how can I be totally transparent to my customers providing them a proof of the donation and, how do I go about doing this? At first I was thinking it is not really necessary my customers to know about that. However I feel if I were a customer and some part of my L's would be donated to a charity as well, I would be really happy if I was aware of it. I would demand though a reliable proof of what the merchant would state regarding this donation. I have no idea how to move on with that so any help would be deeply appreciated! Thank you in advance for any ideas about this matter.