Privacy
What this site collects
polyglotninja.com is a static website. There are no accounts and no login. Nothing about you is collected until you say it can be, and the section below says exactly what happens if you do.
Stored on your device only. The site uses your browser's local storage to remember your interface language, your quiz results and belt, and the contents of your cart. This data never leaves your device and we cannot see it. Clearing your browser data removes it.
Newsletter. If you request a word list by email, your email address and the language you chose are processed by Kit (ConvertKit LLC), our email provider, to deliver what you asked for and, if you consent, occasional letters. You can unsubscribe with one click in any email, which deletes you from the list.
Contact form. Messages sent through the site are delivered to our inbox via Web3Forms and protected from bots by Cloudflare Turnstile. We keep your message only as long as the conversation needs.
Hosting and security. The site is served by Cloudflare, which processes standard technical logs (such as IP addresses) to deliver and protect the site. Donations run on Ko-fi and purchases on our print-on-demand partners; payment details are handled entirely by them and never touch this site.
Measurement, and how to switch it off
The first time you arrive, a bar at the bottom asks one question: whether I may watch how the site gets used. Until you answer, nothing is loaded and nothing is sent. If you answer no, nothing ever is, and the bar does not come back.
If you answer yes, the site loads Contentsquare, a measurement tool. It records the session anonymously: which pages you open, where you scroll, where you click, where you give up. It builds heat maps out of that. I use it for one thing, which is finding the pages that fail people. There is no advertising here, nothing is sold to anyone, and no profile is built about you.
Contentsquare sets five cookies, all beginning with _cs_, which identify the browser and the session rather than the person. It also uses your IP address to work out an approximate location. Text you type into a field is masked before it leaves your browser.
Contentsquare processes this data on my behalf, under their own privacy policy at contentsquare.com/privacy-policy. You can ask me to delete your data at any time, at the address at the bottom of this page.
Links to Amazon
The buttons that lead to the books on Amazon are affiliate links: if you buy something after following one, Amazon pays me a small commission, and you pay the same price. Amazon sets its own cookies once you are on their site, under their own policy.
The one thing that runs without asking
There is a visit counter that runs whatever you answer: Cloudflare Web Analytics. It writes no cookies, stores nothing on your device, and cannot follow you from one website to another. It counts pages, referrers and countries, and that is all it can do. It runs because otherwise, if most people say no to everything below, I would not even know how many people came here.
Advertising
This is the second question the bar asks, and it is a separate answer. If you say yes to it, the site loads the advertising pixels of the platforms I actually run adverts on. They tell me which advert brought someone here and whether that person bought something, and they let me show the site again to people who have already visited.
These pixels belong to the advertising platforms I use, which may include Meta, Google, TikTok, Pinterest, LinkedIn, Microsoft and X. They set their own cookies, and the data goes to those companies under their own policies. That is more than the measurement above does, which is why it is asked separately and why saying yes to one does not say yes to the other.
No adverts are shown on this site, and nothing here is sold to anyone.
Change your mind
Both answers can be changed here, and take effect immediately:
Saying no also writes the cookie Contentsquare itself uses to keep a browser out of collection, so you stay out even if the tool is loaded somewhere else.
Your rights
You can ask what we hold about you (usually: an email address, if you subscribed), ask for its correction or deletion, and withdraw consent at any time. Write to [email protected] and it will be done.