If a visitor leaves a comment on the site, we collect the data indicated in the comment form as well as the visitor’s IP address and browser user-agent data for spam detection purposes.

An anonymized string created from your email address (“hash”) may be provided to the Gravatar service to determine whether you use it. The Gravatar privacy policy is available here: . Once your comment has been approved, your profile image will be publicly visible in the context of your comment.


If you leave a comment on our site, you can have your name, email address and website saved in a cookie. This is done for your convenience so that you don’t have to fill in the data again when you comment again. These cookies are stored for one year.

Embedded content from other websites

Articles on this site may include embedded content (e.g. videos, images, articles, etc.), such content behaves just as if a visitor were visiting another site.

These sites may collect data about you, use cookies, implement additional third party tracking and monitor your interaction with the embedded content.

How long we keep your data

If you leave a comment, the comment itself and its metadata are stored indefinitely. This is done to detect and approve subsequent comments automatically, instead of placing them in a queue for approval.

Where your data is sent

User comments can be checked by an automatic spam detection service.