Certain brands, such as Yahoo!, insist that the exclamation is part of their name. In writing about such a brand or company, is the inclusion of the vanity punctuation right, wrong, or optional?
I would like my writing to be correct; however, of more concern with the average reader, I wouldn't want my writing to seem to be pandering.
Best Answer
It seems optional, considering that even business article talk about Yahoo, while introducing some facts at the end about "Yahoo!".
If your article is about the public corporation, you should use consistently one convention, preferably the one using the exact name of the company: "Yahoo!".
But "Yahoo" is also natural since:
www.yahoo.com
, notwww.yahoo!.com
!
'.