Good. It's a crutch for poorly composed sentences or for prose intending to imitate the affect of poorly composed sentences. There's not a single sentence under the sun that needs an emdash. Commas and parentheses can do it all, and an excess of either is a sign of poorly edited prose.
I don't buy the pro-clanker pro-em dash movement that has come out of nowhere in the past several years.
I don't buy the pro-clanker pro-em dash movement that has come out of nowhere in the past several years.