Ha! I could only ever see ultra-obsessed (a thousand times more obsessed than I, if that's possible)
Harry Potter fans using the name Seven, because it's the most powerful number.
Now, I'm obsessed enough that I want to use
Severus,
Fred (nn for
Frederick), and maybe
Hermione, but those are reall names. Seven is a number. There's a fine line between psycho-obsessed and ridiculous-obsessed, I being the psycho-obsessed. Someone who names their kid Seven is ridiculous-obsessed.