If you’ve read Malcolm Gladwell’s book The Tipping Point, you’re already familiar with the key concepts of the influentials theory and its place in modern marketing.

Many have tried to debunk its validity, but as far as I know no one has yet succeeded. Although, it appears some are steadily gaining ground:

Watts wanted to find out whether the success of a hot trend was reproducible. For example, we know that Madonna became a breakout star in 1983. But if you rewound the world back to 1982, would Madonna break out again? To find out, Watts built a world populated with real live music fans picking real music, then hit rewind, over and over again. [...] Watts predicted that word of mouth would take over. And sure enough, that’s what happened. In the merit group, the songs were ranked mostly equitably, with a small handful of songs drifting slightly lower or higher in popularity. But in the social worlds, as participants reacted to one another’s opinions, huge waves took shape. A small, elite bunch of songs became enormously popular, rising above the pack, while another cluster fell into relative obscurity.

But here’s the thing: In each of the eight social worlds, the top songs–and the bottom ones–were completely different. In fact, Watts explains, only about half of a song’s success seemed to be due to merit. “In general, the ‘best’ songs never do very badly, and the ‘worst’ songs never do extremely well, but almost any other result is possible,” he says. Why? Because the first band to snag a few thumbs-ups in the social world tended overwhelmingly to get many more. Yet who received those crucial first votes seemed to be mostly a matter of luck. [...]

If Influentials cannot tip a trend into existence–and if success in a networked society is quite random–what’s a poor marketer to do? Is there any way to intentionally infect people with an idea or a product?

Watts believes there is. In the past three years, he has worked on a new form of advertising he calls Big Seed marketing (this is part of his work at Yahoo, where he is a principal research scientist). Watts developed the concept with a friend, Jonah Peretti, a veteran of the viral wars. [...]

In their hunt for a practical way to create maximum exposure for any given ad, Watts and Peretti developed a way to marry the benefits of old-school mass marketing with clever six-degrees effects. Their first test case came when the Brady Campaign, the gun-control group, asked for help with an online petition.

Watts and Peretti set up a regular mass-market ad buy, running banner ads on several prominent blogs and news sites. Like many ads these days, they added a button on the ad that allows people to forward the ad to a friend–a way of collecting eyeballs for free. Typically, people ignore this “share with your friends” pitch. But Watts and Peretti included technology called ForwardTrack, which displays the route the ad travels once you’ve forwarded it. This turned ad forwarding into a piece of social cartography. People would pass the ad specifically to those friends most likely to keep it moving. It became a Facebook-like contest to sign up the most friends.

The technique marries Watts’s two main epiphanies: Cascades require word-of-mouth effects, so you need to build a six-degrees effect into an ad campaign; but since you can never know which person is going to spark the fire, you should aim the ad at as broad a market as possible–and not waste money chasing “important” people. And it worked. The pass-around effect doubled the number of people who saw the Brady Campaign’s ad. They paid for 22,582 hits and received an additional 31,590 for free. Another campaign they ran for the Oxygen network quadrupled the audience size, adding 23,544 hits to the initial 7,064.

Neither was, technically, a viral hit. Neither passed the disease threshold, where the meme spreads exponentially and engulfs the mainstream. “But you can double your impact, which is still pretty good,” Watts says.