Did you implemented Social Enterprise-like SharePoint projects? Do you have some guidelines/best practices regarding this topic? Thanks!!!
For general description have a look here :
Have a look at these presentations to get more details on social from SharePoint (2010 at least) perspective, from Optimus via Slideshare http://www.slideshare.net/ram_prabhala/intranet-trends-best-practices-2011 in intranet.
As well as this about ROI in Social media http://sharepointsocial.de/2012/03/23/en-the-social-media-roi-conversation/
Hope it helps, C:\Marius
There are also some great 3rd party tools if you have the budget for them. My company implemented Newsgator www.newsgator.com which sits on top of SharePoint and it has increased our cross-office collaboration 3-fold. SharePoint 2010 gives you a base platform but is still missing a lot from the social perspective.