"Weak ties--relationships that don’t require everyone to know everyone else in the group, and which are not based on physical proximity." (Weinschenk, S., PH.D. (2011). 100 Things Every Designer Needs to Know About People [Kindle]. pg, 145)

“In the world of social media, people may have 750 Facebook friends and 4,000 Twitter followers. A Dunbar’s number advocate, however, would respond that these are not the strong, stable relationships that Dunbar is talking about, where everyone knows everyone and people are in close proximity.” (Weinschenk, S., PH.D. (2011). 100 Things Every Designer Needs to Know About People [Kindle]. pg, 144-145)