This book essentially highlights the areas where social media played significant roles in the advancement of democracy and good governance in Nigeria. The advancement of democracy and good governance in Nigeria has demonstrated the efficacy of social media use in electioneering campaigns, virtual monitoring of election conduct across various polling units, and the dissemination of post-election results, as well as serving as a medium for whistle-blowing for corruption and bribery by government officials. This book is laid on Agenda Setting Theory and Technological Determinism Theory provides a complementary role. The book reveals that social media platforms are sources of credible information as well, and they influence positively democratic rule in Nigeria. The book also shows that social media platforms are free for all avenues to accuse political opponents of wrongdoings, however, such accusations oftentimes generate positive reactions from political officeholders to be upright in governance.