You may find this talk by Ken Everett of N2NHub on the The Surprising Value of Conversations given by Ken Everett at the HRExchange in Jakarta in October 2012 of interest.
For me it gets particularly interesting at 06.25 where Ken starts to talk about the top three HR priorities (engagement, talent retention and leadership development) and then ties them in to the role of conversation.
One of his examples, I am delighted to see, is the example of ING Bank and how they use Knowledge Cafes for Management Development that I blogged about a little while back.
Enjoy :-)