Punctuation—return to two spaces after the period at the end of the sentence recommended for ease of reading comprehensionJust when we'd gotten all our holdout authors trained to use one space, the APA goes and messes with our heads.
Updated at 9:25 p.m.: The APA Style blog says that this change is just to make reviewing draft manuscripts easier for the people who do it; it's not intended for published articles. But that's silly, because somewhere down the line after peer review, some poor schmuck of a production assistant or a freelance copyeditor is going to have to run a macro to remove all the extra spaces.
But holy cow! Someone's set up an entire blog—not just a blog post—in protest of the change.
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