Here are two websites where you can sign a petition in support of a public option for health insurance ...
http://www.thepetitionsite.com/takeaction/205855008
http://action.firedoglake.com/page/s/keepthepledge
http://www.thepetitionsite.com/takeaction/205855008
http://action.firedoglake.com/page/s/keepthepledge