Fact: the US uses the metric system for decades (maybe closer to a century?). All federal contracts in the US must be in metric. Its not the same at the State level, and its not mandated for private businesses–unless they’re working for the federal government.

Also every US American is taught metric in schools.

I think you mean US Americans. Most Americans speak Spanish.

I doubt they’re downvoting it because its not English. That would be ridiculous

Any example implementations for wordpress that you can link-to?

So…on my WordPress blog I used to say “follow me on twitter!” with a link to my twitter account. Then folks would click on it, and they’d get updated about my new articles published to WordPress by twitter (because I’d write a post on twitter linking to all my new articles).

Since the fediverse appeared, I now say “follow me on mastodon!” with a link to my mastodon account. Then folks click on it, and they get updated about my new articles published to WordPress by mastodon (because I write a post on mastodon linking to all my new articles).

So now if I have this WordPress ActivityPub plugin, what do I say instead of “follow me on X?” And what should it link-to?

This is a question of UX. I could explain to someone on mastodon how to follow my WordPress site using ActivityPub (tell them to copy the URL into their mastodon instance search field). But is there any one link that will magically work for all users to subscribe-to WordPress in whatever their ActivityPub client is?