1. Dunbar’s Law: It states that no human being can handle more than 150 trustful relationships. Of course, you may have much more online friends like onFacebook or twitter. 150 is the Dunbar number, named after British anthropologist Robin Dunbar.
2. The Long tail: It states that there is more value in the sum of things that get small demands than on the big demand things. It has been applied to contents (sites getting most of their traffic out of Google searches), advertising and electronic commerce (Amazon getting more sales out of unknown books than from bestselles).
3. The six degrees of separation theory: It refers to the idea that there are no more than 6 people between you and anybody else on Earth. American psychologist Stanley Milgram is the most known theorist of this.
This is the only one of the theories listed here, which I had tried personally when I first read about it and found it worked. I tried connecting with impossible people like Bill Clinton obviously was one step nearer:-), Osama Bin Laden, Melinda Gates, Shakira and Ronaldinho and could get them in less than six degrees! (
4. Zuckerberg’s Law of Information Sharing: It states that online content (pictures, videos, etc.) doubles every year. Mark Zuckerberg is the founder of Facebook, the main social network. It’s similar to the law first articulated by Gordon E. Moore, the co-founder of Intel, that the number of transistors on a chip doubles every two years.
5. Metcalfe’s Law: It states that the value of a network increases exponentially with the number of users it has. It is an old theory applied to telecommunication networks (for example, the telephone), but it is nowadays valid also for social networks.
6. Nielsen’s Law of 1/9: It states that 10% of users create 90% of online content. It is a version of the Paretto’s Law (20/80 ratio).
7. Permanent beta: It states that a site is always being tested by its users, so that it will never be in a final version. This is because users can so easily report errors os suggestions and innovation is permanent. Google’s Gmail was the first popular product that applied it.
8. Crowdsoucing law: It states that products made out of the collaboration of several people are better than individual ones.