If you're going to cloak the links then get a redirect from one of your own domains. You can easily create redirects via your domain manager, even assigning a subdomain to each link. That should not be so hard to do and will be a better technique to use as you will always control the destination of those links. So for instance, if you are posting images on Pinterest, then you can make your 'redirect' a direct link (with no affiliate link) when first posting and then later go back and add your affiliate link to the redirect so that you get credit for any sales resulting from clicks on that link. The reason you want to work things this way is how many times links are moderated on social network sites when they are first put up, but then later when the heat is off, you can easily get in there and redirect to the site of your choice, without ever editing the original post. This idea works too on sites like Youtube.