Macfilink works by cloaking your affiliate link - creating a Web page for you to upload to your own site, so that your customers see a page on your site, with your URL, instead of the affiliate URL - but they still see the merchant's site. They never see your affiliate link, so they can't remove your affiliate ID or change it to their own.
You don't need to know anything about HTML for it to work. You simply enter the affiliate URL, and Macfilink creates an encoded HTML page for you. You can add a heading (e.g. to link back to your site, or a banner), and other options. You can then copy the HTML, save it to disk, or even have Macfilink upload it directly to your Web server!
Macfilink is now freeware!