From the Sunlight Foundation blog:
Today, you don’t need to come to Washington or wait for politicians to leave their security bubbles to get a word in edge wise, all you need is to connect with them on Twitter and keep the lobbying to 140 characters or less. In our quest to pass S. 482, a bill to require senators to file their campaign finance reports electronically, we are taking our lobbying, with your help, to Twitter.
Here’s the scoop: There are currently seventeen senators on Twitter. For the most part these senators have not yet signed on as cosponsors to S. 482. In fact, only two of the seventeen are already cosponsors. We need your help to petition over Twitter the fifteen who have not cosponsored and ask them to support the bill by signing on as a cosponsor.