The correct answer is "The Strength of Weak Ties"
In the networks of Strong Ties there is a common identity, and there we seek  references for decision making (relationships with a high level of credibility and influence);  Weak Ties networks are important because they connect us with various groups, breaking  the configuration of clusters, and functioning as bridges through which innovations circulate.  The Internet connects more often and sometimes more intensely, the relationships of Ties  Weak and Strong Ties, preserving and expanding Granovetter's concepts.