According to research by the Dachis Group, only 10 – 20% of employees in large organizations are actively engaged with their enterprise social collaboration platforms, as reported in this MIT Sloan article:
It may be that for many employees, even in these early adopter firms working to integrate internal social business applications, using these applications do not offer enough value or reason to shift behavior. Employees may be unaware of the potential of their social platform; or perhaps they have not been properly trained and educated. Or of course, it is also possible that while they are aware and have been trained, the value still isn’t there or isn’t high enough.
Via Gust MEES