This document discusses how to write effectively across different media and social media platforms. It outlines several key principles for good writing: writing concisely using precise language; focusing the writing; including important details while keeping it brief; using an active voice; maintaining consistency; organizing information in an orderly manner; and viewing writing as an iterative process of drafting, revising, and editing. The overall message is that these principles of good writing are necessary for success when writing on Twitter and other social media.