The lack of a gender-specific, second-person plural pronoun is a source of consternation among grammar and usage sticklers. In our post-feminist society, the use of guys to address all-female or mixed-gender gatherings rubs some people the wrong way, for different reasons.
Fifty Shades of Grey is notorious for several reasons, including evidently tortured prose. I haven’t read it (really, I haven’t), so I can only judge by what others tell me. But one area in which this book evidently did not fail was its proofreading.
I just finished reading Steven Pinker’s new book, The Sense of Style: The Thinking Person’s Guide to Writing in the 21st Century, and here’s the crux of what I want to tell you about it: Go buy this book!