A method and apparatus for scalable handling of communications with varying numbers of participants over a telephone interface is described. The approach treats the different participants recorded communications as part of a larger asynchronous communication and provides a serializing (voice) user interface for participating in the conversation. This can be used to provide services ranging from phone-based discussion boards to more orderly teleconferences. Features may include moderation of comments, automatic removal of comments, and/or other features tailored to the specific use of the serializing approach.