I stumbled on an interesting graphical map that is a gateway into discussion boards for educators:
This map of the future is provided by the 2006 – 2016 Knowledgeworks Foundation and The Institute for the Future. The map is organized into a visual grid that the reader can move through with their mouse. When they come to a topic of interest they can click the tag and read a short description. From there they an enter the discussion or send the topic to a colleague.