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.

(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.