I gave a talk a couple of years ago called Tools for Talking.
I'm preparing a new talk, which, in some ways, is a sequel to this one. As part of that prep, I thought it might be useful to write some short summaries of each of the tools outlined here, with links to resources on them.
During the Open Space on Drupal and Education I scribbled some rough notes as folks introduced themselves and outlined their interest in the broad topic.