I found a handy site for taking notes, but everything it says about the privacy of this one:
“Anonymous by default, no adverts. We offer a high level of privacy for both writers and readers. You don’t need to create an account to post something. There are no adverts on the entire page and we don’t use any social media scripts. You can rest assured that information about your activity on the site will not be used by advertising companies or social media.”
This is in the “About” section.
There is no information about what information the site collects about the user.
I kinda think that the IP address is public information when you go to a site still. Since it’s needed to get data back to you and you’re requesting to get data back. But maybe I’m just a bit too old and stuck in the thinking of the phone book and such.