More connections to enterprise, potential for some cloud HR play, a ready-established pseudo social network to compete with Facebook for Work (maybe as part of a Yammer, Office365, Skype for Business play), st-tonne of user data, SlideShare...
If someone is shopping for a job on LinkedIn, do they want their employer to know that? Isn't there some risk of trust violation? Why would I want to take my online resume and hand it out around work?
I just don't get the synergy plays here. They all feel like a very expensive moonshot.
It's not a moonshot at all. LinkedIn is a pretty well understood business.