Sometimes I think the writers at Yahoo! Style know they need to throw some punctuation at a sentence, but have no idea where it should go. This genius writer probably thought an apostrophe was required, so she took a chance and came up with this:
It might have been more effective if she asked an editor’s opinion first. Oh horrors! Maybe she did ask for editorial advice and they told her to stick it there! Anyhoo, regardless of how that apostrophe got there, it’s wrong. The apostrophe is being used to indicate the omission of a letter, so unless she meant pol, the apostrophe belongs after the L and the result is short for old.