[rchaud]

Every college student in the world has a LinkedIn account, whether they want one or not. That's a gigantic userbase of engaged users.

[ghusbands]

That seems unlikely, given that any EU institution unnecessarily sharing personal details with LinkedIn would be breaking the law.

[Phileosopher]

Users. Not necessarily engaged. Anecdotally, nobody I've ever known uses LinkedIn unless they're job-hunting.