Wes Miller from DirectionsOnMicrosoft thinks that Yammer will eventually become included in the enterprise CAL for products like SharePoint, providing an excuse for Microsoft to bump the price up. But he fails to see how Yammer functionality would be useful in Skype or Lync.
And Koplowitz believes it might be done slightly differently. "My guess is that it Yammer will end up being a part of Office365, and perhaps covered by an enterprise license as it will link with on-premise software," he said.
But at the moment it is simply too early to tell. Microsoft has owned Skype for over a year and has done very little in terms of integration with other products, so it may be many months before Microsoft customers see the tools they use every day undergo any appreciable Yammerification.
Read more about mergers/acquisitions in CIO's Mergers/Acquisitions Drilldown.