Here is a presentation on blogging and humanitarian action (pdf 2 MB) that I presented to Communicators from European Red Cross Societies. 

Some additional resources on this subject:

Guide to social media & communications (pdf)

Some sites/blogs I mentioned on communications:

blog search engines:

Technorati top 100 blogs:

CNET top 100 blogs:

PR & Communication blogs:

 Shel Holtz (PR & technology):

Richard Edeleman’s blog:

Loic le Meur (source of some quotes/ideas of my presentation): 

And the cartoons in my presentation are from gapingvoid who even inspired my own above sketch.