It is enforced no matter where in the world you are, as long as your site is accessible to EU citizens. And you will be surprised by how much jurisdiction European courts can have. A monetary judgement can be collected from any American company via UFMJRA, for example (http://www.uniformlaws.org/ActSummary.aspx?title=Foreign%20M...).

We’re not talking about a company, we’re talking about a fetish forum without a scrap of money changing hands. Who is enforcing GDPR there exactly? EU paratroopers? Not to mention that most people don’t live in the EU or America, so again, who’s enforcing this on our hypothetical non-business?

It’s really hardcore levels of bullshit being employed in this thread to make a big scary mountain out of a molehill.

The EU could legally jail you the moment you step into its territory, and that includes flights that go through Europe, even without landing.

That doesn’t sound even remotely correct given the nature of the “offense” in this case, for which the remedy is a fine. Can you cite this “jail the moment you step into its territory” thing?

Jail is a place where you're put if there is a chance that you might try to run away from a trial and its resolution. I was in jail - and I did nothing, the case was immediately dropped.

Additionally, while the remedy for this crime is a fine, the remedy for not paying the fine is prison.