Linkedin Workspaces ..."enable you to enrich your profile, share and collaborate with your network, and get the key insights that help you be more effective. Applications are added to your homepage and profile enabling you to control who gets access to what information."
If these are good (they aren't yet), this will be huge for business collaboration and sharing while saving time and effort.
That's is what this here Internet is all about...
Here is an Advertising Age article about exactly who uses Linked