This document discusses promoting technology-enabled knowledge sharing of open educational resources (OER). It addresses three challenges to building and sharing knowledge: understanding local knowledge, extracting it, and representing it for others. Three cases are presented where knowledge was shared about course transformations, using OER, and effective OER use. Technological tools can capture and represent knowledge portably. Benefits include more productive, engaging, and sustainable knowledge building and sharing. Three technology-supported environments are described: an incubation space, a gallery for inspiration, and an open forum commons for communities of practice.