Data Services and WCF
Watch the WCF and Data Services video on YouTube.
Data Services
LINQ to SQL doesn't support Data Services out of the box. With PLINQO, set the IncludeDataServices property of the Entities template to True, and PLINQO sets up your project to support Data Services.
WCF
PLINQO takes care of the tedious work of adding DataContract and DataMember attributes for Windows Communication Foundation (WCF). Set the IncludeDataContract property of the Entities template to True, and PLINQO generates the attributes, so using WCF with PLINQO is painless.