Send a connection request to anyone on LinkedIn
qzaidi.github.com
qzaidi.github.com
Find someone who instead of a name has Private, eg http://linkd.in/T0BzOz - then copy their view?id, eg. 196011057 and enter it after the viewee?id here - http://www.linkedin.com/miniprofile view=&vieweeID=196011057&context=nus. Then alakazam, you can see their name. Also, the auth type and auth token in the url will change as well when you click on the 'View Profile' button within the new view.
Slight issue is the invitation says you know them as a friend, but if you're going a abuse a system, do it properly.
I just did a company search for Register.com, opened their page, click to see employees and every single one of them has a 'Connect' button.
What's the hack?
I'm guessing linkedin fixed the problem?