Hello Christina,
I was wondering the same thing. I did contact a local SCORE chapter, to see if anything official had to be done, but they weren't much help. They felt my product was do low priced for Cause Marketing, but I was going to use only one product. . .and I don't feel she was thinking the situation through, i.e. offer a group of this one product. I do see people who don't have any .org information in their shop stating a % of the proceeds will go to a charity. I wish ETSY could do something for those of us who have a particular product we'd like to sell to raise funds for a charity. I do know that some .orgs have a contract for artist/artisans.