Machine generated contents note: 1. Social Media -- The New Dinner Table? -- 2. Evolution or Revolution -- Why Facebook and Twitter Matter? -- 3. Public Opinion 2.0 -- Read My Feed -- 4. Congress 2.0 -- Internet-Style Politics -- 5. Congress 2.0 -- Who's Tweeting? -- 6. Public Opinion 2.0 -- The New Social Capital -- 7. Congress 2.0 -- Controlling the Flow of Information -- 8. Public Opinion 2.0 -- The Direct Conduit -- 9. Congress 2.0 -- Tweeting for Support -- 10. Social Media Tomorrow -- Tweeting the Future?.