This article explores how professionally oriented weblog projects support the emergence of loosely coupled learning networks. We provide an overview of the technical infrastructure of this particular form of personal webpublishing and the social ecosystems that emerge through current weblog authoring practices. Furthermore, we suggest that some weblog ecosystems can be conceptualized as learning webs. These learning webs appear to meet the specific needs of knowledge workers for flexible and dynamic learning environments. Some preliminary results of qualitative data collection in this area are shared and some further lines of research are proposed.