The National Incident Management Organization has written a Social Media Guide for Incidents. Centered around the application Twitter, which limits a message to 140 characters, the draft manual is 85 pages long. The document also covers other social media tools, search engines, Facebook, photo storage and distribution, and applications that make it easier to work with Twitter. This could be a very useful manual for someone who knows nothing about these applications.

Here is the cover of the draft document.