Radical Democracy and the Internet provides a systematic and mutual interrogation of radical democratic theory and Internet practice. Contributors critically examine a range of radical democratic theories in relation to online communication, from deliberative to agonistic to autonomist Marxist, and explore how such communication may be advancing democracy beyond what is conceptualized and practised within present liberal-capitalist political contexts. The result is an important contribution to both democratic theory and new media studies, and essential reading in politics, media studies, communications, and sociology.