Privacy policy


The address of our website is:



When visitors write comments on the website, we also collect the data shown on the comment form, the visitor’s IP address and the user agent string (used to identify the browser) to help detect spam.

An anonymised string (also known as a hash) can be created from your email address and forwarded to the Gravatar service to check whether you do actually use it. You can find the Gravatar service privacy policy here: Once your comment has been approved, your profile picture will be publicly visible in the context of your comment.


If you are a registered user and upload photos to this website, you should avoid uploading photos with an EXIF-GPS location. Visitors to this website could download photos stored on this website and extract their location information.

Contact form

Writing a comment on our website may constitute an agreement to store your name, email address and website in cookies. This is a convenience feature so that you don’t need to re-enter all this data if you write another comment. These cookies are stored for one year.

If you have an account and log on to this website, we will set a temporary cookie to determine whether your browser accepts cookies. This cookie does not contain any personal data and will be discarded once you close your browser.

When you log in, we will set some cookies to store your log-in information and display options. Log-in cookies expire after two days and cookies for the display options expire after one year. If you select “Stay logged in” when you log in, your log-in will be maintained for two weeks. Logging out of your account will delete the login cookies.

If you edit or publish an article, another cookie is stored in your browser. This cookie does not contain any personal data and only refers to the post ID of the item you have just edited. This cookie expires after one day.

Embedded content from other websites

Posts on this website may contain embedded content (e.g. videos, images and posts). Embedded content from other websites behaves exactly as if the visitor had visited the other website.

These websites may collect information about you, use cookies, embed additional third party tracking services and record your interaction with this embedded content, including your interaction with the embedded content if you have an account and are logged onto this website.

Analytical services
Who we share your data with
How long we store your data

When you write a comment, it is stored indefinitely, including metadata. In this way, we can automatically identify and approve follow-up comments instead of holding them in a moderation queue.

For users who register on our website, we also store the personal information they provide in their user profiles. All users can view, change or delete their personal information at any time (the user name cannot be changed). Website administrators can also view and change this information.

What rights you have to your data

If you have an account on this website or have written comments, you can request an export of your personal data from us, including all data you have provided to us. You can also request the erasure of all personal data we have stored about you. This does not include the data that we must retain due to administrative, legal or security-related requirements.

Where we send your data

Visitor comments may be investigated by an automated spam detection service.

Your contact information
Further information
How we protect your data
What measures we offer in the event of data breaches
The third-party providers we receive data from
The automated decision-making and/or profiling we carry out with user data
The industry’s required disclosure obligations