This document summarizes key points from chapters 11 and 12 of a communication textbook. It discusses the nature of technology-mediated communication and challenges like less richness and phone snubbing. It also covers technology's addictive potential through dopamine loops. The document outlines the disinhibition effect online and both bright sides like self-disclosure and dark sides like sexting. It discusses using technology effectively and impacts on sleep from bedtime use. Finally, it covers ethics, deception, improving decision-making, and disagreeing civilly.