The question is whether the cause justifies giving Amazon money--something
I can't answer for everyone, but note that Amazon is not
doing this out of the goodness of its heart:
"The Amazon Honor System does not charge registration fees, set-up fees,
or fixed participation fees. We do, however, charge
transaction fees based on the amount of money you receive. The
fee schedule is very simple. For each payment you receive, we will
charge $0.15 plus 15% of the total transaction amount. The person
making a payment is not charged any fees at all."
Notes:
'Amazon Honor System' is a trademark.
Quoted text was found at the URL specified in the previous node
although I knew about it already from an
article
in The Register.