SQL Server 2008 Service Broker - Conversation Priorities

In a recent article I talked about creating Service Broker application and communicating between Initiator and Target. Service Broker ensures Exactly Once in Order delivery for messages inside a conversation. But what if you want some important messages/conversations (with higher priority) to be processed earlier than messages/conversations with lower priority? Is there any way to define priority in sending or receiving messages in Service Broker? To learn more click here.