Internal social networks serve as gateways to informal learning.
Social networking doesn't just happen on vast public networks like Facebook and Twitter. It's also happening inside organizations. According to a 2014 report by MarketsandMarkets, the global enterprise social software market is forecast to grow from $4.8 billion in 2014 to $8.1 billion in 2019.
These private, internal platforms are designed to foster collaboration, knowledge sharing, and informal learning among employees.