That is true, and my point was more an aside about businesses that have a profit motive and incorporate a charity component to it so this probably wasn't the best thread to muse in.
That being said, I don't know if the charity aspect would still accomplish the desired goals. What if the recipient started skimming emails, with no real intention of following through, just because they want to see their favorite charity get a few more bucks? If the money went to the recipient instead I would probably think there would be a greater likelihood of it being read as anybody I'd be willing to pay to read my emails would stand lose only their sense of integrity but the charity aspect might make it easier to blow off.
I might be splitting too fine a hair here.