Yammer vs. Email: what's the business case?

[Vili]

I would think about privacy, i think email is less prone to spying, stealing business plans etc. than a email. Of course, not the free email from google, yahoo, etc....

If the business is not something bleeding edge, a new approach, secret breakthroughs then it might not so much damaging,

What i find out most what makes workers productive is real life conversations, even clssic social hang outs like business parties, and quite a lot of meetings, including top management,