The paper reports on an exploratory case study where an organizational learning methodology was used to support knowledge sharing in a medium-sized distributed software development company. The method is based not only on a codification approach but also on a personalization strategy. To facilitate its use in a dynamic environment with minimal overhead, our MASE system utilizes both informal and formal knowledge representation mechanisms. The results provide evidences for the need of knowledge sharing tools (1) to incorporate not only codification-oriented repository technologies but also those that facilitate communication and collaboration among people, and (2) to support not only structured but also unstructured knowledge representation mechanism. It reveals that an informal knowledge authoring tool such as the Wiki-based MASE is used for sharing content for problem understanding, instrumental, projective, social, expertise location, and content navigation purposes. We also observe self-organized maintenance of the repository content among the ordinary repository users as a result of the open-edit nature of MASE.