Cost per mille requires only that the publisher make the advertising available on his or her website and display it to the page visitors in order to receive a commission. Pay per click requires one additional step in the conversion process to generate revenue for the publisher: A visitor must not only be made aware of the advertisement but must also click on the advertisement to visit the advertiser's website.
Shopify is probably the most popular e-commerce solutions provider out there, but because there are so many products and options, newcomers can easily get confused. If you believe your audience has products to sell and could benefit from Shopify’s products and are able to elucidate the benefits of signing up for Shopify, you can definitely earn some big money with their affiliate program.
If an investor puts $500,000 into a candy store with the agreement that the owners would pay the investor a percentage of earnings, that would be considered passive income as long as the investor does not participate in the operation of the business in any meaningful way other than placing the investment. The IRS states, however, that if the investor did help manage the company with the owners, the investor's income could be seen as active since the investor provided "material participation."