BlogActor.cs

public class BlogActor : ReceiveActor
{
    private IActorRef _users;
    private IActorRef _reporting;

    public BlogActor()
    {
        _users = Context.ActorOf(Props.Create(typeof(UsersActor)), "users");
        _reporting = Context.ActorOf(Props.Create(typeof(ReportActor)), "reporting");

        Receive<Message>(message => {
            _users.Forward(message);
            _reporting.Forward(message);
        });
    }
}