RoomManager.FollowedRooms property

Lync 2013

Returns a collection of followed rooms

Namespace:  Microsoft.Lync.Model.Room
Assembly:  Microsoft.Lync.Model (in Microsoft.Lync.Model.dll)

public IList<Room> FollowedRooms { get; }

A followed room is a room that is added to the local user's contact list. When a user signs in to Lync, all rooms in the followed room list are automatically entered and the user is visible on the participant roster of each followed room. When the user signs out of Lync, then the user automatically leaves all chat rooms.In addition, you get message posting notification events on every followed room as soon as the user signs in and you register for the appropriate room events.