LinkedIn recently launched a great features which will help you in tracking companies you like or your competition or someone you could be hiring from.. It gives you an update on "RECENT DEPARTURES" - Employees that recently left the companies (don't imagine that LinkedIn will magically update if someone doesn't edit their profile) ; NEW JOB OPPORTUNITIES-  (great if you are job seeker) ; PROMOTIONS & CHANGES & NEW HIRES are the other two updates which  you  can get via email like this :-