Most Disruptive Companies, Part 3

Disruption means shaking up markets you are already in, or entering. In this installment of the Baseline 25 Most Disruptive Companies series, Lawrence Walsh and Chris Gonsalves take a look at the hottest companies on the list, which are disrupting not only their own markets, but have reached out into society to change it as well: Google, which used to be the company that promised to do no evil, is now so ubiquitous that it is in the gun sights of every major tech vendor; Facebook, the social network pioneer that has become a bona fide application platform, fueled by its developer program; and China's Alibaba and Baidu, which are creating their own rules in how to build Web markets.