Ok, I was wrong. I thought that I knew everything about SEO but now I have this doubt. What is TrustRank? I have no idea about this and I really would like at least an introduction to this topic. Well, hope to read some answers from you guys. Thank you all.
TrustRank is pretty old TBH. You can read more about it here: http://en.wikipedia.org/wiki/TrustRank It's a way of seperating spam websites from good ones. Here is a more in depth PDF (I havn't read it myself). http://www.cs.toronto.edu/vldb04/protected/eProceedings/contents/pdf/RS15P3.PDF