This chapter presents an analysis of interaction in computer-mediated group meetings. Five undergraduate students used a quasi-synchronous chat interface to conduct four virtual team meetings. Using the framework of conversation analysis, I describe how self-initiated self repair of minor errors such as typos was used by team members as a vehicle for group norm development. The norms for typing style (punctuation, correcting typos and spelling mistakes) vary widely across computer-mediated communication (CMC) contexts. I show how the main function of the repair attempts was not to clarify meaning, but rather to help team members, particularly in their first meeting, work out an agreed-upon set of typing conventions for their subsequent interactions, thus contributing to the development of a norm of informality.