I want to talk about an article: Gross domestic Freebie by James Surowiecki.

First of all, I was surprised by the number of Twitter’s daily users and its revenue. Even thought Twitter doesn’t charge people to use its technology, it’s revenue is just five hundred ad thirty five million dollars. Also Twitter has more than two hundred and thirty million active users.

Second. I have been curious for long time about some companies that based on web and app. They offer their high technology for free but they keep growth. I don’t understand how they generate income and how they affect on G.D.P. According to the article, the value of information and data part of economy is underestimated. Digital innovation can even shrink G.D.P.