Use Signalr to have a facebook like notification system

Question

I want to implement a facebook like notification system in ASP.NET MVC 3 : notifications are sent to a specific user to notify him for an action on one of his items.

Is

Answer 1

It is appropriate for this or you use polling, those are the two choices.

Heres a brand new video from today on this:

http://channel9.msdn.com/Shows/Web+Camps+TV/Damian-Edwards-and-David-Fowler-Demonstrate-SignalR?utm_source=dlvr.it&utm_medium=twitter