The real lesson of 'Free'(yglesias.thinkprogress.org)3 points·by gabrielroth·17 ปีที่แล้ว·0 commentsyglesias.thinkprogress.orgThe real lesson of 'Free'http://yglesias.thinkprogress.org/archives/2009/06/competition-profit-rates-and-freeness.php0 commentsPost comment—