A few weeks ago I was doing a workshop and demoing some of the tools of social media. I took the above photo with my camera phone and uploaded to flickr. When I got to showing Twitter, I was met with the usual skepticism. So, I twittered about it as part of the demo and asked my network to leave some comments on the flickr photo.
Within in about 5-10 minutes, we had over 100 comments (plus lots of annotations on the photo using the notes feature on Flickr). This is always powerful to demonstrate the rapid spread of information and the networked effect - and can help open the possiblities.
Chris Brogan started a project called "Twitter Packs" which is a simple list of people who use twitter organized by interests or locations. The Nonprofit Twitter Pack is here (are you following everyone?). I think that if we the nonprofit people organize and find each other we can have a richer experience on Twitter.
The list below is from the Nonprofit Twitter Pack section -- Not on the nonprofit list? Add yourself here.
http://twitter.com/ahoppin (online organizing, grassroots, web 2.0 for government, social networks, open-source CMS, etc.)
http://twitter.com/audrieschaller (consultant to nonprofits; board development, communications, web 2.0 adoption for nonprofits)
http://twitter.com/creativesage (mgmt. consultant for nonprofits, social entrepreneurship, arts and environmental issues)
http://twitter.com/ruby (lotusmedia.org, OrangePolitics.org, Fellowship of Reconciliation, network-centric advocacy, social networks, etc.)
http://twitter.com/shava23 (nonprofit consultant, grantwriter)
http://twitter.com/sugarcube (Juvenile Diabetes Research Foundation, JDRF)
http://twitter.com/wmacphail (rabble.ca, Alzheimer Society of Ontario, w8nc inc.)
Update: A few more from http://twitter.com/osocio