This site records basic, anonymous traffic data: which pages are opened, which links are clicked, roughly where the visit came from. It is used to see which repairs people actually need and which tools are worth covering. No accounts, no profiles, no selling anything on to anyone.
Clicking an Amazon link takes you to Amazon, and Amazon applies its own cookies and privacy policy from that point. That is how the commission is attributed.
Videos are embedded through youtube-nocookie.com, which does not set tracking cookies until you press play.
What you type in the form is sent by email so it can be answered. It is not added to a mailing list.