I was wrong. I’ve always advocated that anything written by a professional writer should also be edited by a professional editor. It’s one way to avoid embarrassing typos like this from Yahoo! Shine:
But then I read this editor’s note at the end of the blog post:
If you can’t trust an editor to know the difference between the contraction it’s and the possessive pronoun its, who can you trust? Certainly not the editors of Shine.