[Danjoe4]

That's the current status quo. The UK can't sue you, extradite you, or really do anything. Assuming that your service providers are US based and you follow US law, they can pound sand. In practice, the US is the only country powerful enough to enforce its laws extraterritoriality. The UK trying to enforce its internet laws on me? An American citizen? Funny joke

[dreamcompiler]

As long as you don't set foot on British soil you'll be fine. But that's less simple than it sounds. Don't book a flight that connects in the UK, sure. But what if your NYC-to-Munich flight has engine trouble and needs to make an emergency landing in London? You are screwed: You'll be pulled off the plane and taken to jail.

Will the US embassy get involved? Of course. Will they get you released? Maybe, but it's not guaranteed. And you are in for a bad time regardless.

[Danjoe4]

The UK knows their place. They could do that but they won't. Also, they'll have trouble even finding who the business operator is. The US allows pseudonymous business structures and their subpoena request will be thrown out on a 1st amendment defense.