Register with MoveOn.org to receive emails about petitions to sign. It is very easy. Reply & send to sign petitions. (I receive mine on my web ready mobile phone, then I can quickly call any phone numbers listed for representatives as well.)

MoveOn.org

Sample MoveOn.org emails:

Dear MoveOn member,

Yesterday, an amazing thing happened. After the Senate's shameful vote, and after President Bush called MoveOn "disgusting,"¹ our email started to fill up with messages like this one:

And then came the donations. By midnight, over 12,000 people had donated $500,000—more than we've raised any day this year—for our new ad calling out the Republicans who blocked adequate rest for troops headed back to Iraq.

..................................................................

 Thursday, February 7th, 2008

Dear MoveOn member,

Since Super Tuesday, something amazing has happened. People across the country—including thousands of MoveOn members—got together and contributed over $7 million to Barack Obama's campaign. It's one of the biggest shows of momentum in online fundraising history.

Money poured in everywhere from Idaho to Georgia. And it wasn't raised at fancy dinners or back-room meetings. It was raised by a wave of real people—most of us just contributing a modest amount—working together to build this campaign for change.

So if you haven't given yet, can you do so now? Whether it's $5 or $50—or $500—every bit makes a difference. Let's keep this incredible momentum growing.

Just click here:

http://pol.moveon.org/give/supertue.html?id=12073 -8350381-h7Uk5u&t=759

And thanks for all you do.

–Adam G., Eli, Ilyse, Justin, and the MoveOn.org Political Action Team
  Thursday, February 7th, 2008