Posts of interest to me: cooking, shaving, politics, science, cats, movies, books, ….
Or, equivalently (and not switching the metric from cards per person to persons per card, as the graphic does):
5.000 cards per person: US
0.400 cards per person: Brazil
0.169 cards per person: Russia
0.030 cards per person: China
0.015 cards per person: India
On another (perhaps related) note: 1€ now is worth US$1.56.
Written for the man who wants to enjoy his shave. User comment: "I bought this as a gift for my fiancé, along with a wet-shaving starting kit and a safety razor. He DEVOURED this book, and finds himself reading it again and again. He finally enjoys shaving. This book has helped him figure out so many things about wet shaving, and has recommended it to all of his friends and family. Truly a great source of information for any man."