"It's very sensitive ... it could cause misunderstanding."
Vietnam's internet authorities had to reject a domain name for a grapefruit wholesaler this week.
The wholesaler had hoped to register www.buoi.com.vn.
They were turned down.
Because without proper Vietnamese tone and vowel markings the word "buoi" (grapefruit) might be confused with "buoi" (penis), said Minh Ngoc, an officer at the Vietnam Internet Network Information Centre.