When economist Tim Harford was planning a trip to China, he realized he would not be able to access a lot of the online services he has come to rely on: no email, no maps, no internet search. He started to wonder what the value was for these services and he came across a study that look at just that: It put a dollar amount on how much these services are worth to us.
The least valuable to people? Social Media. The most? Search. Second place? Email.