I could agree with your take that Windows Live Messenger, and Windows Live Spaces fit the description of a social network used in the patent. > "A social netwo

I could agree with your take that Windows Live Messenger, and Windows Live Spaces fit the description of a social network used in the patent. > "A social network is any type of social structure where the users are connected by a common feature, for example, Google Plus. The common feature includes friendship, family, work, an interest, etc. The common features are provided by one or more social networking systems, such as those included in the system 100, including explicitly-defined relationships and relationships implied by social connections with other users, where the relationships are defined in a social graph 179. The social graph 179 is a mapping of all users in a social network and how they are related to each other. The social graph 179 is included in the memory 237 that is described below in detail. " I would also argue that any competent attorney could argue that the other three MS services don't fit that description.