title: What is the best practice for sending data to the client: POCO or DTO?
body: <p>I'm starting a project using EF 4 and POCO. </p>
  
  <p>What is the best practice for sending data to the client ? Should I send the POCO or I should have a DTO instead?</p>
  
  <p>Are there any issue I should be aware of when sending the entity (that is disconnected from the context) to the client ? </p>
  
  <p>Is it a recommended practice to send the POCO to the client layer?</p>