Considering the requirements of the Kelluwen learning community and the didactical designs that are being developed, shared and enforced, plus a review of collaborative learning platforms, implementing a Virtual Worklog module became a need for the Kelluwen community's management platform. The purpose of this Virtual Worklog is to be a virtual space where teachers and students interact which each other. The Virtual Worklog also registers such interactions on a permanent basis to support feedback and student assessment. This work introduces the development and validation in a real education context of two interactions of the Virtual Worklog, a software tool based on microblogging that promotes and registers the interactions, both inside each class and between twin classes within the learning community.