Referral links and affiliate programs are a marketing device that many companies use to reach more potential customers. Each company has a marketing budget and pays the writer from that marketing budget. Customers pay exactly the same price as if they went directly to the companies’ websites.
Some of the external links on this website are referral or affiliate links. If you click on these links and buy a product or service the writer earns a small amount. You may choose to go directly to the companies’ websites. If you skip the referral links the companies save money because they do not pay the writers whose work persuaded you that it was worth buying.
If every such link was labelled (aff. link) it would destroy the flow of the writers’ work, so it is best to assume that all external links are affiliate links and might allow the writer to earn the price of a loaf of bread.