Punctuation continues to perplex the writers and editors who work on the Yahoo! front page. They just can’t figure out when to use a hyphen. Like here, where they omitted two of those pesky characters in what should be “19-year-old”:
Omitting the hyphens in an age is one of the top three hyphenation mistakes made by Yahoo! staffers. And while I’m on the subject, another frequent hyphenation abomination from Yahoo! is the inclusion of a hyphen after an adverb ending in LY:


