This post provides a technical account of integrating Twitter services into a social networking platform. The implementation dovetails with a goal of the UX2.0 project, to explore social networking for digital library. Dealing with OAuth authentication is a prerequisite of any implementation involving Twitter services. The requirement not only underpins identity services (federated sign on), it is also mandatory for consuming the API methods of the social network. Part 1 of this post addresses this prerequisite and provides an account of how Twitter federated sign on can be developed. This post describes the development of tog - an existing open source social networking platform which we are experimenting with. The development involves an underpinning 'shared object' framework and a use scenario of diffusing messages to Twitter.