Tech 2.0. World-changing social media companies

"Examines how the social media website Reddit has affected the world of social media"--Provided by publisher.

"People everywhere now share photos and videos of their lives with followers around the world via Instagram. Inside, read how this . . . app company started and how it has transformed visual communication and how it is planning to change it even more in the future"--Provided by publisher.

"WhatsApp is a messaging app used by nearly a billion people to trade information, photos, and chats more quickly and less expensively than 'traditional' texting. Inside, find out who created this . . . company, how it grew with shocking speed, and how it is looking to the future to become bigger and better"--Provided by publisher.

"SnapChat has become the . . . way to grab and hold people's attention, while also serving as a . . . communications link between friends, schoolmates, neighbors, and more. Inside read how the app began and how it has changed the way millions of young people 'talk' to each other"--Provided by publisher.

"Inside, find out how Facebook got started, how it grew . . . and where it's going next"--Provided by publisher.

"140-character Twitter posts, or tweets, have become a standard part of world communication, from the Oval Office on down. Inside, read how this . . . company began and how it grew rapidly while creating an all-new way for people, including celebrities, athletes, politicians, and more, to speak to the world"--Provided by publisher.