The short version: this site does not run advertising trackers, does not build a profile of you, and does not sell anything about you to anyone. The longer version explains what little is collected and why.
What we do not do
- No third-party advertising scripts. Sponsored placements here are plain markup written by us. They do not load code from an ad network, so nothing follows you from here to anywhere else.
- No tracking pixels and no retargeting. We cannot tell an advertiser who clicked, because we do not know.
- No selling or sharing of personal data. Not to advertisers, not to data brokers, not to anybody.
- No account required to read. Every page on this site is readable without identifying yourself in any way. An account only remembers what you saved.
What is collected
What people type into the search box
When you search this site, we record three things: the words you typed, how many results came back, and the date. Nothing else — not your address, not your account, not a session identifier, not your browser. The records cannot be tied to a person, including by us.
We do this for one reason, and it is worth saying plainly: a search that returns nothing is the clearest signal we get about what this compendium is missing. Those phrases become the next pages. If you would rather not contribute to that, the site works perfectly well without the search box — every section is reachable from the menu.
Server logs
Like every web server, ours records requests: the page asked for, the time, the browser's user agent, and the IP address the request came from. This is what makes it possible to keep the site running and to notice when something is broken or under attack. These logs are kept for a short period and then discarded, and they are not used to build a profile of anyone.
Our content delivery network
The site sits behind a content delivery network, which serves pages faster and absorbs attacks. It processes the same request data described above on our behalf, and it may set a strictly necessary cookie to distinguish real visitors from automated traffic. That cookie carries no advertising function.
Cookies
We use one cookie of our own, and only if you touch the control that sets it: your choice of light or dark theme. It stores a single value, it stays on your device, and it tells us nothing about you. If you never touch the toggle, no cookie of ours is set at all — which is why this site does not greet you with a consent banner. There is nothing to consent to.
You can clear cookies at any time in your browser. Doing so only means the site will go back to following your system's light or dark preference.
If you create an account
An account is optional and exists for one purpose: remembering the pages you saved. You can read every page on this site without one.
There are two ways to sign in, and they store slightly different things.
With Google. We receive three things — your name, your email address and your profile picture — and store those together with the identifier Google uses for your account. We do not receive your Google password and we cannot see anything else in your Google account.
With an email address and password. We store the address, the name if you give one, and the password as a one-way hash. A hash cannot be turned back into your password: if our database were ever copied, nobody would learn what you typed. We send one email to confirm the address — an account cannot be used until that link is opened — and one more only if you ask to reset the password.
Either way we also keep the pages you save and the dates you first and last signed in. That is the complete list.
We do not keep a reading history, we do not record which pages you opened, and none of this is shared with advertisers or anyone else. Signing in sets one cookie holding a random session token; deleting it signs you out.
The occasional email is off by default and stays off. Creating an account does not put you on a mailing list — the only mail an account generates on its own is the confirmation link and, if you ask for it, a password reset. There is a separate switch in your account for a handful of updates a year. We only ever email the people who turned that switch on themselves; it cannot be turned on for you, not even by us. Every one of those emails carries a one-click unsubscribe that works without signing in, and we record the date you turned it on so we can show our working.
Deleting your account is a button on your account page. It removes the account, the saved pages and the session immediately and permanently, and it does not need our involvement.
If you write to us
Messages sent through the contact page reach us by email and contain whatever you chose to put in them. We keep correspondence for as long as it is useful — a correction we have acted on, an advertising enquiry we are still discussing — and no longer. We do not add correspondents to any mailing list.
Links to other sites
Once you follow a link away from here, that site's rules apply, not ours. Exchanges, regulators and tools have their own practices, and some of them are considerably more curious about you than we are.
Your rights
Where data protection law applies to you, you have rights over personal data we hold — access, correction, deletion, objection. In practice we hold almost nothing about any individual reader, so most requests can be answered in a sentence. Write to us through the contact page and we will.
Children
This site is written for adults and is not directed at children.
Changes
If we start collecting something we do not collect today — an account system would be the obvious example — this page will say so before it happens, and the date below will change.
Last checked 19 Oct 2026.