David Card
![David Card](/assets/img/authors/unknown.jpg)
David Card
David Edward Cardis a Canadian labour economist and Professor of Economics at the University of California, Berkeley...
barriers break few means receive send spending time user
When you break down the barriers between communications, every IM user is able to send and receive more messages, which means they'll be spending a little more time on their messenger, and get a few more impressions.
business percent reached united united-states
When VCR's reached about 15 percent penetration in the United States, that's when Blockbuster was created. You had this whole new business explode.
eyeballs front looking microsoft search
Microsoft is looking to put more eyeballs in front of its search engine.