[Tomte]

No, they can't. If I wanted to protect my privacy I'd use a service like RespectMyPrivacy that hides my name.

Just as a rhetorical question: do they decline local parts in the form of firstname.lastname? Thought so.

[newscracker]

Not sure I got what your rhetorical question is about. You don't have to provide any first name or last name or a real name. I've also linked to the FAQ and the payments explanation in another comment above, which go into more detail about what information they avoid collecting, storing and processing.