Privacy policy

What is collected

• Newsletter address, only if you type it in. Stored once, used for the briefs, deleted on unsubscribe.
• Affiliate click log, when a link through /go/ is used, the destination, the page it appeared on, and the browser's own referrer/user-agent string are logged. It answers “which pages earn”, nothing more.
• Anonymous tool queries, the CADR tool logs which combination was looked up (particles/gases, portable/MERV, the area). No identifier of any kind is attached.
• Anonymous page-open pings, each article view sends one ping carrying the page slug and a random id kept in your browser's local storage. It only powers the “readers also viewed” list and the “most read” badge. It is not a cookie, is never shared, disappears when you clear site data, and rows older than 90 days are pruned from the log.

What is never done

• • No analytics profiles, no cross-site trackers, no advertising cookies.
• • No email addresses sold, rented, or “shared with partners”.
• • No bought or bot traffic is ever used to inflate numbers.

Third parties

Following a link to a retailer takes you to their site, under their own privacy policy. If this site ever earns a commission from that visit, it receives an aggregate report, not your identity.