Here's how Heather Holdridge of Care2, the sponsor of this session, describes its focus: It's a mad mad Web 2.0 world and hot platforms such as Facebook and Twitter are fast becoming indispensable components of most online campaigns. The echo chamber of the blogosphere is a powerful voice for amplifying your message and the potential for mobile in the US grows daily. But even as we seek to reach the audiences and energy of these interactive online constituencies, is the decidedly "web 1.0" channel of email still getting results? At the end of the day, it's about finding and having the ability to connect with your supporters to have collective impact. This panel will explore the effectiveness of...