How can we expand opportunities and awareness of virtual professional development to all educators? How do we develop empowered and "highly connected teachers", a concept often referred to by the DoE's Karen Cator?
Tech savvy educators are leveraging Web 2.0 tools to build personal learning networks which support their interests and professional development needs (see Steve Hargadon's Classroom 2.0 site for example: http://classroom20.com).
Web conferencing tools are also being used to bring together educators in new ways. There is no excuse NOT to use these technologies to provide rich, personalized, and authentic experiences for teaching professionals. Another example of this is the Global Education Conference (http://globaleducationconference.com), co-founded by Steve Hargadon and myself. Make sure to check out last year's archives: http://globaledcon.weebly.com/recordings.html.
There also needs to be more research into PLNs and the role that they can play within traditional PD efforts.