Can anyone help me understand that 300 million number? Taking a rough estimate of 2% market share from here http://en.wikipedia.org/wiki/Usage_share_of_web_bro

Can anyone help me understand that 300 million number? Taking a rough estimate of 2% market share from here http://en.wikipedia.org/wiki/Usage_share_of_web_browsers http://en.wikipedia.org/wiki/Usage_share_of_web_browsers, if all 7 billion people in the world used the internet, it still only works out at 140 million people.