He's not just asking for donations, you get something. From his website:
For donations of $7 or more, I will mail you a project poster.
For donations of $20 or more, I will mail you a signed CD.
For donations of $50 or more, I will mail you a signed CD, poster, and special Ghanaian momento.
For donations of $1000 or so, I can arrange a house concert... let's talk for details.>>
Musicians need to fund projects somehow! They can't make a living by selling cd's anymore...got to try some new ways of thinking! Kudos for coming up with a great idea and sticking your neck out Nat and HBR crew!
I'm sending in my $20 now and look forward to getting my signed CD.