Web 2.0 technologies empower learners to create personalized and community-based collaborative environments. Social networking technology affords learners to weave their human networks through active connections to understand what we know and we want to know. Social acts that bring out identities, awareness, relationships, connections, and interactions among and between learners are necessary for interactive learning. Learning should be grounded from self-presentation to personalized learning space to collaborative community learning. Participatory Web 2.0 technology accentuates the features of digital multi-modals representations, and syndications to empower the learner to manage their learning spaces. The constructs of Web 2.0 learning environments are discussed in four dimensions from a theatrical metaphor--cognitive/scripts, social/actors, networking/stages, and integration/acting dimensions--to guide further research and effective practices. (Contains 1 figure.)