The paper will be sketching out a constructivist approach to learning with microcontent, with special regard to new web technologies emerging in the “blogosphere”, the networked space created by weblogs and widened by many new web services that help to assign metadata to objects, or to construct social networks and webs of trust through the use of personal publishing or social networking platforms. Especially new "tagging" technologies and practices, creating "soft" metadata, show a possible way to new kinds of collaborative knowledge environments. It will be shown that is not only microcontent itself, but also its contextualization through learner-centered approaches, discussion through trackbacks or commentaries, and "soft" object metadata which contribute to an understanding of microlearning and provide insights for implementing personal publishing systems in (educational) institutions. Until now, most of these conceptions are emergent on the web, so future research would have to identify possible uses and integration into learning environments and didactical applications.

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