BERNSTEIN is the 2,098th most common US surname
BURSTEIN is the 20,352nd most common US surname
BERSTEIN is the 38,576th most common US surname
BURNSTEIN is the 65,237th most common US surname
So I can understand why people might, on hearing my last name, spell it as BERNSTEIN...but why is it that people who see my name on the Internet tend to retype it as BURNSTEIN? That's far less common!