Hi André,
Several thoughts. I'm not aware of any source of revenue that comes to us via Amazon or CDNow. We might want to remove that.
I'm also a bit concerned about the T-shirts; we should get a report on that, I don't know that we've gotten much.
Also, we should track this; after we change, we should see how much donations are, and then see if we think it's better or worse than what it was before. It's hard, as donations are quite variable in timing and amount.
Cheers,
Jeremy