Macrobase PI here – someone squatted on that io domain a long time ago while the project was active. Once we moved to macrobase.stanford.edu, a fan apparently took interest in our old domain. Thanks Andy for updating the link.
"A fan" hehe. I wonder if some genius at pornhub marketing thought the word had enough innuendo to be worth paying the squatter for redirect rights. It's not exactly "Macrohard"[ware] or its inverse (who we can thank for Github and VS Code)