Captain FI participates in affiliate marketing through Amazon LLC and may receive a small commission on any products you buy through affiliate links. This is typically a negligible amount and is not charged to you the customer, but instead comes from the affiliate marketing program not having to pay for conventional advertising. Any commissions made are reinvested into site development to ensure a better user experience. I will never recommend an affiliate link for a product I do not use or vouch for myself.
This also includes google adsense which displays ads on the website side bar and embedded in the content/article.