Interesting info on the impact of social networks on politics

Ben McConnell at the Church of the Customer Blog did a post titled Social networks and politics:

"Social networks are the new grassroots organizing force for politics.
The first-week numbers for Barack Obama's presidential campaign website illustrate why:
70,000 members signed up
4,000 blogs started
3,000 fundraising pages
started
2,400 groups started
Social networks for grassroots campaigns
give the true believers more of what they want: a voice, a vote and a vocation. "