Contextually speaking, mobile phones are by definition social networking devices. Breaking out of the classic phone/phone book mental model and transforming that experience to include 21st century-style social networking, though – that’s where the fun challenge is for designers. Asking ourselves some mobile-specific questions can lead us as a community to create some exciting, disruptive social interfaces for mobile.
See also her essential list of do’s and don’ts.
(Bit by bit we are making sure all the essays are available online, either hosted on their authors’ blogs or personal websites or in some cases included in the project’s wiki, where we’re maintaining a list of essays.)