Here is a killer app for a large volunteer group,network of allied friends, campaign staff, membership of large organization, etc.
It is a del.icio.us with a collaborative twist and a really simple user interface. Digg is very cool.
Digg is a technology news website that gives editorial control back to the community. Most technology websites allow users to suggest content by submitting links or stories to an editor. If the editor believes the story to be relevant to the masses, he or she moves the story to the homepage. With digg, users also submit links for review. But rather than allowing an editor to decide which links go on the homepage, the users do.
The key would be to deploy this to all the members of Asthma Families, People who like clean water, TrueMajority, campaign finance reform, etc.
The members can do the random web surfing and on occasion submit a story, clip or website to the "attention" of the rest of the community.
Other folks can simply review prefiltered stories submitted and if they think it is cool and relevant add Digg points.
The stories important to the membership elevate and build community understanding and cohesion at the same time.
It is very freaking cool. Digg for Digg.