OK. The title is a teaser and a mis-statement. Forwarding has been going since the first printing press. But social media is changing the way we forward information and the types of information we share. Read this article for some clarification about networking by sharing info and some tips.
Full article from Harvard Business Review by Tom Davenport
Forwarding (sharing) pamphlets is credited with being a strong influence in the American Revolution. Printing presses were more common and therefore the cost to print was lower. Benjamin Franklin and many others published pamphlets explaining why the 13 colonies needed to be independent. The pamphlets were passed hand to hand to reach more people. Their writing educated and motivated people to take a stand.