The key answer of exercise 4
The key to exercise solutions in chapter 8.2 - My place in cyberspace for the textbook Speakout Intermediate - Students' Book with authors Antonia Clare and J. J. Wilson from Pearson Education
Question
Do you know how YouTube started? Read about its origins. Why did it become successful?
Answer
It started when three friends were having trouble emailing a video clip, so created a website where videos could be easily shared. The website became successful because of a number of features: links to the videos, which made them easy to email; tell-a-friend functions; a feature that allowed YouTube videos to be played on other social networking sites; and another feature that let users comment on the videos.