I am trying to use Domain Driven Development (DDD) for my new ASP.NET MVC2 project with Entity Framework 4. After doing some research I came up with the following layer conventions with each layer in its own class project:

MyCompany.Domain

     public class User
    {
        //Contains all the properties for the user entity
    }

    public interface IRepository where T : class
    {
        IQueryable GetQuery();
        IQueryable GetAll();
        IQueryable Find(Func condition);
        T Single(Func condition);
        T First(Func condition);
        T GetByID(int id);
        void Delete(T entity);
        void Add(T entity);
        void Attach(T entity);
        void SaveChanges();
    }

  public interface IUserRepository: IRepository {}

    public class UserService
    {
        private IUserRepository _userRepository;
        public UserService(IUserRepository userRepository)
        {
            _userRepository = userRepository;
        }
    // This class will hold all the methods related to the User entity
    }

MyCompany.Repositories

public class UserRepository : IRepository
{
    // Repository interface implementations
}

MyCompany.Web --> This is the MVC2 Project

Currently my Repositories layer holds a reference to the Domain layer. From my understanding injecting a UserRepository to the UserService class works very well with unit testing as we can pass in fake user repositories. So with this architecture it looks like my Web project needs to have a references to both my Domain and Repositories layers. But is this a valid? Because historically the presentation layer only had a reference to the Business Logic layer.