Have you ever wondered, how websites know how many people look at a particular product? Ophir Harpaz investigated:
[1/4] Ok this is really funny, check this out. I was in the process of booking a flight via @OneTravel. Trying to make me book ASAP, they claimed: "38 people are looking at this flight". Whoa, 38 is a lot, I have to hurry up. But first I have to check how they came up with 38 >> pic.twitter.com/UaGhaiCQrR