This document discusses several theories of communication technology adoption and use: 1) Diffusion of Innovations theory which explains how new technologies spread through a social system over time. 2) Uses and Gratifications theory which suggests that media users actively choose technologies that fulfill their needs. 3) Social Information Processing theory which examines how online relationships form through social and work settings. 4) The Theory of the Long Tail which proposes that as technology costs fall, consumers will have infinite choice in niche products and services rather than just mainstream options. The document predicts that by 2023, online interaction methods will continue to improve through advances in video communication and messaging, and consumers will maintain wide choices in products and services.