The paper addresses the main activities and findings of an EU based initiative for provision of interoperability of eLearning systems in the enlarged EU. The initiative is a project named iCamp1. The project is based on the current research results in several finished and on-going projects such as the Network of Excellence in Professional Learning - PROLEARN. As several surveys of the eLearning market have shown the abundance of eLearning systems that are difficult to be interconnected and used in various environments the need for system interoperability rose. The problem of interconnectivity is especially important for learning resource repositories intended for the widest audience in Europe and worldwide. The paper provides a short insight into the technical, pedagogical and collaborative learning approaches taken within the iCamp initiative.