No, this is a competitor to SalesForce's Chatter and the like, not Sharepoint (which is more of an enterprise content management tool).
The implications for sharing in a social sense aren't as significant as that for work - especially if you happen to work in a more tightly secured workplace - how many families or friend groups will kick you out for inadvertently sharing sensitive data? - that's a real potential career limiting move in the enterprise space.
The implications for sharing in a social sense aren't as significant as that for work - especially if you happen to work in a more tightly secured workplace - how many families or friend groups will kick you out for inadvertently sharing sensitive data? - that's a real potential career limiting move in the enterprise space.