From Entrepreneur, February 19, 2015. Identifies 2 different networkers online: posters and seekers. Those who actively post info, resources, tips, offers are posters. Seekers are the consumers of products, services, and content. On social media, look for high-level networkers (HLN), those who are very active and have at least 500 connections on LinkedIn or Xing.
Very nice poster/advertisement from University of Phoenix on top ten skills for successful 21st century worker. Note emphasis on leadership, communication, global citizenship, entrepreneurialism, and accessing, analyzing and synthesizing information
Interesting working paper by Annie Feighery, on Participatory Epidemiology website, asserting primary value of Facebook and Twitter.
Note this example of virtual penetration for mobile phones below. Does this threshold hold true for social media use?
"Sub-Saharan Africa, for example, now has a majority of countries with populations whose mobile phone market is at the level of virtual total penetration. Virtual total penetration is reached when more than half of potential mobile phone owners have a mobile phone. "