I retained something that my lecturer mention today that I found especially interesting. This matter was weak and strong ties within a network. I looked at Raymond's Trend forecasters handbook but I wasn't completely satisfied with his explanation of the subject. So I kept researching about it a bit more and I found this clearer vision of weak and strong ties.
"In Mark Granovetter's social world, our close friends are often friends with each other as well. The network behind such a clustered society consists of small, fully connected circles of friends connected by strong ties, shown as blod lines. Weak ties, shown as thin lines, connect the members of these friendship circles to their acquaintances, who have strong ties to their own friends. Weak ties play an important role in any number of social activities, from spreading rumors to getting a job."
(Barabasi, A.L. (2002) Linked: The New Science of Networks. Plume: Penguin Group)
I have been thinking about it and I came out with the conclusion that for my own network is going to be much better to use weak ties. Because I am interested in getting as many different opinions as posible.