Administrator of the website is Maciej Radzikowski. Contact:

What personal data is collected


When visitors leave comments on the site we collect the data shown in the comments form, and also the visitor’s IP address and browser user agent string to help spam detection.

An anonymized string created from your email address (also called a hash) may be provided to the Gravatar service to see if you are using it. The Gravatar service privacy policy is available here: After approval of your comment, your profile picture is visible to the public in the context of your comment.


Signing to the newsletter requires to provide first name and email address. This data is collected and shared with Mailchimp service that is used to manage the newsletter. You can see the Mailchimp privacy policy here:

To stop receiving newsletter and further data processing you can unsubscribe using a link provided in every message sent to you.

Contact form

When sending a message through the contact form you name, email address and all additional provided data is collected to allow further communication.


Site uses cookies to improve browsing experience. Some of them are used to save your preferences (for example your name put in comment form). Other are coming from third-party tools mentioned in other parts of this document.

You can block cookies from this site in your browser settings.

Embedded content from other websites

Articles on this site may include embedded content (e.g. videos, images, articles, etc.). Embedded content from other websites behaves in the exact same way as if the visitor has visited the other website.

These websites may collect data about you, use cookies, embed additional third-party tracking, and monitor your interaction with that embedded content, including tracking your interaction with the embedded content if you have an account and are logged in to that website.

How long your data is retained

By default all comments that you leave and all sent messages and its metadata are retained indefinitely.

What rights you have over your data

You can request to receive an exported file of the personal data we hold about you, including any data you have provided to us. You can also request that we erase any personal data we hold about you. This does not include any data we are obliged to keep for administrative, legal, or security purposes.