This is a great article, Jon; I have to stop and think about these things all the time. How do you feel about the fact that in certain cases, when enough people use a word incorrectly for a long enough period of time, the incorrect usage becomes accepted as correct? I know diehards rail against this.
WCF includes a message framing protocol that is called .NET Message Framing for use with transports that do not natively support messaging. This framing protocol is used with the TCP transport to create NetTcp and with the MSMQ transport to create NetMsmq.
Support for the $format Query Option. The OData protocol supports both JavaScript Notation (JSON) and Atom feeds, and OData provides the $format system query option to allow a client to request the format of the response feed. This system query option, if supported by the data service, must override the value of the Accept header of the request. WCF Data Services supports returning both JSON and Atom feeds. However, the default implementation does not support the $format query option and uses only the value of the Accept header to determine the format of the response.