There are many hyperlinks from Macintosh Garden to Amazon catalog. By appending a tag to Amazon addresses, we can benefit organisations. I do not know what is correct wording, whether to call them affiliate, associate, or referral links. Maybe Macintosh Garden might join the program, or recommended a charity?

I like BookMooch and Electronic Frontier Foundation.
?tag=bookmooch-20
?tag=electronicfro-20