Another, related, issue would be the existence of two authors with the same name who both publish under their birth names. I don't see how they could be a 'trade mark' so to speak unless there was an intent to commit identity theft which would be a separate issue (which appears to be the case here)
I'm pretty sure the GP's point was that the US shouldn't have .gov/.mil etc, every country essentially has a form of government and military — And besides .gov.us would be more explicit.
No one? That's a rather brash statement to make. Here in Ireland I can count on zero hands how many people use credit cards on a day to day basis. Debit cards are the norm in much of the EU I would assume.
Your url comment reminds me of the concept of the semantic web [0] Whereby we can have a structured machine readable and pure URL structure backed by ontology and linked data. There's a project that is working on this for Wikipedia called Dbpedia. [1]
[0] Unfortunately this concept has been completely bastardized by random research groups shoehorning the technology for EU grants, from my experience working in one such group.
With physical access, sure. The same could be said for shutdown with physical access. Nothing stopping the user without group membership from holding down the power button or unplugging the kettle cable.