Vote.com 
A fully interactive site designed to give users a voice on important public issues and other topics. When visitors vote on a topic listed on the site, an immediate e-mail is sent to significant decision makers like congressional representatives, senators, and the president telling them how you feel.
http://www.vote.comSpeakout.com: Issues 
Library of online information and links related to (mostly U.S.) public policy issues. Formerly Policy.com.
http://www.speakout.com/activism/issues/
IGC - Institute for Global Communications 
Nonprofit, provides alternative sources of information, and comprehensive Internet services for progressive individuals and organizations.
http://www.igc.org/
MillionSoulsAware.org 
A not-for-profit project aiming to raise awareness of issues of concern. Once a million persons have read the current featured article, the site will cover another topic.
http://millionsoulsaware.org/