Many advertisers are unaware of the potential of the affiliate marketing business model for their own businesses, in fact, most small businesses have never heard of it. But imagine marketing your products only to interested people for no upfront fee. Paying only when you get results is a risk-free way of advertising that requires no marketing budget to get started. As you can imagine, this is great for any start-up business with little funding for marketing their new brand.
I would like to add that for information products, a lot of the time it’s pretty easy to rank for “information product review”. I recently did a review of a popular ebook that is a month long discipline program. I went about it by doing the actual program and documenting everything. At the end of the month I wrote up a 2700 word article summing up the whole experience.