Should a service layer return view models for an MVC application?

Question

Say you have an ASP.NET MVC project and are using a service layer, such as in this contact manager tutorial on the asp.net site: http://www.asp.net/mvc/tutorials/iteration-

Answer 1

No, I don't think so. Services should care only about the problem domain, not the view that renders results. Return values should be expressed in terms of domain objects, not views.