The well-mannered restaurateur knows that the best way to handle unwarranted criticism is with a generous spirit and, ideally, a sense of humor. A prime example is this postcard that Chicago restaurant Longman & Eagle had printed and hands out with guests' checks. The text is from a Yelp review:
We saw this via Eater, and as Eater points out, the restaurant was even kind enough to clean up the spelling and grammar of the original Yelp post!