Here is an excerpt:
Gladwell's book laid out many other factors that can "tip" a trend. He described other influential types: Mavens, who love to collect information and help others make decisions, and suave Salesmen of ideas. In order to spread, an idea or product had to be "sticky," and appear in a fertile social context. But as The Tipping Point climbed the charts, marketers fixated on Gladwell's Law of the Few, his suggestion that rare, highly connected people shape the world. For anyone involved in pitchmanship, it was an electrifying notion, one that took a highly complex phenomenon--the spread of memes through society--and made it simple. Reach the gatekeepers, and you reach the world.
Marketers seized on Malcolm Gladwell's "Law of the Few," his suggestion That rare, highly connected people shape the world. But Watts, for one, didn't think the gatekeeper model was true. It certainly didn't match what he'd found studying networks. So he decided to test it in the real world by remounting the Milgram experiment on a massive scale. In 2001, Watts used a Web site to recruit about 61,000 people, then asked them to ferry messages to 18 targets worldwide. Sure enough, he found that Milgram was right: The average length of the chain was roughly six links. But when he examined these pathways, he found that "hubs"--highly connected people--weren't crucial. Sure, they existed. But only 5% of the email messages passed through one of these superconnectors. The rest of the messages moved through society in much more democratic paths, zipping from one weakly connected individual to another, until they arrived at the target.