CaptainSpam is a user on octodon.social. You can follow them or interact with them if you have an account anywhere in the fediverse.
If you don't, you can sign up here.
Idea: Make a website that doesn't use cookies and displays a popup declaring this (a la the scaryscary "This website uses cookies" warnings that are apparently still a thing in 2017). Of course, the popup should explain that, because there are no cookies on the website, it can't tell you've already seen it, so it will show up on every page you visit on the site.
