I like the fact that Don mentioned the cultural shift that has to be considered when moving using social media to replace email. This is one of the hardest part in engaging end-users to shift their mindset. But, once they "see the light", the shift is amazing to watch (i.e. my Jive Inbox now has more messages than my Outlook Inbox). Also, Integrating jive_for_outlook to once Jive instance is key to driving this initiative.
This is brilliant, I keep saying we should replace both email and hard drives ! And another fab thing is that using Jive Anywhere allowed me to see that you had already shared this link here.