1. Data overload & privacy
   1. Big brother is watching you...
   2. Infobesity
   3. How to find relevant information?
   4. Are we sure users are ready/willing to learn/teach everywhere?
   5. How can children be protected from pervasive teaching so they can learn in ways and times that they choose?
2. Context
   1. Recommendation & adaptation
   2. See 6th sense project from Pattie Maes
   3. Context acquisition
   4. Adding context to produced content
   5. What to capture, how (context, learner model, etc)?
3. Infrastructure
   1. What infrastructure is required to enable pervasive collaborative learning?
   2. Support for multi-modality
   3. Who owns/provides the devices : institution or users?
   4. Integration of tools & systems to Personal environment: contextual, responsive, open environment
   5. Devices & environments are very varied. Services have to be very adaptable to be usable generally
4. Support of learning activities
   1. Provide the right activity according to the current situation
   2. The idea of pervasive learning imply you can learn anything , anywhere. This may detract from the quality of learning
   3. Seamless support of activities across contexts and interaction means
   4. How to get richer content with Web 2.0 services and provide new activities
   5. Learn from places and artifacts
   6. Need for capturing of informal learning
   7. Combining formal & informal learning
   8. Learner evaluation
   9. How can we merge learning in real & virtual worlds?
5. Evaluation of pervasive learning systems