This document discusses frameworks for classifying language competencies in computer-mediated communication. It examines taxonomies proposed by Salmon (2000), Hempel & Stickler (2005), and Desjardins & Peters (2007). The author suggests their own taxonomy of online teaching skills, separating them into technical literacy, receptive literacy, and authoring literacy. They raise questions about how to balance general and specific skills, and whether language deficiencies can seriously hinder successful computer-mediated communication.