From press releases to memos, the American worker peruses dozens of emails per day. Most are read without incident, but a single mistaken "reply all" or unnecessary "cc" will absolutely turn a cubicle out. If you want to see Debbie in accounts receivable completely lose her shit, reply all to the next company-wide email with a shrewdly appropriate Grumpy Cat meme. That divorced mother of three will pull the dusty keyboard from your Dell PC and beat you to death at your desk. Don't say we didn't warn you.