SubIDs not only provide you with additional information about your Traffic Source, they also give extra insight into your Traffic when you use filters or group your reports by a certain parameter. To make the utilization of subIDs easier for you, we are introducing subID alias - the ability to assign custom names to subIDs for future reference.
This can be done upon creating/editing a Traffic Source.
Should you have any further questions, please contact email@example.com and our team will be happy to assist you. Happy tracking!