Generate messages using js on your github.io page, and then
              post them to api.github-pages-visitor-log.net/log where they become viewable by the
              public. This way you can tell if and how people are using your site, and it's totally above-board
              what you're doing and who can see it.
            
Participation is free. Only the last 100 messages are retained for any participating repository, and all messages are deleted if you deregister.
This site is hosted by github pages. Here are the recent logs:
            If you log more than the default "someone visited" message, we recommend that you do display the recent logs so that your visitors know what's being recorded.
.github-pages-visitor-log
                at the repository root. Use "Update Registration"