Personal Learning Environments

Do any of you have experience with Personal Learning Environments (PLEs)? How will course management systems and virtual learning environments become more responsive to individual users both in terms of content and the customisation of applications? How desirable and how workable are PLEs for educational institutions? A new book on the subject is accepting proposals for chapters and case studies. More information here: http://wirelessready.nucba.ac.jp/PLEbook.pdf