title: Sharing domain model with WCF service
body: <p>Is it good practice to reference my web applications domain layer class library to WCF service application.</p>
  
  <p>Doing that gives me easy access to the already existing classes on my domain model so that I will not need to re-define similar classes to be used by the WCF service</p>
  
  <p>On the other hand, I don't like the coupling that it creates between the application and service and i am curious if it could create difficulties for me on the long run.</p>
  
  <p>I also think having dedicated classes for my WCF app would be more efficient since those classes will only contain the members that will be used by the service and nothing else. If I use the classes from my domain layer there will be many fields in the classes that will not be used by the service and it will cause unnecessary data transfer.</p>
  
  <p>I will appreciate if you can give me your thoughts from your experience</p>