.pro is a sporadic hit; registration hotspots cumming in from Amsterdam, Kings Cross, under the 59th Street bridge,NYC, to name but a few. Don't know why!
Throughly though, can you imagine a doctor's business card with .pro as part of his email address? The first question that comes to mind is, 'Who is he trying to convince and where's the exit sign?'.
Nobody, apart from inadequate or fake professionals with fake credentials will use this address. .name & .pro are both the same.... crap tld's.
Hi I am Del.Boy.name, a.k.a Del.Boy.doctor.pro