This document provides guidance on writing for online audiences. It notes that online writing must be concise and scannable as users have short attention spans and are competing for millions of other sites. The document recommends speaking to the audience in their language, understanding what they want, and making the purpose and relationship to the whole site clear. It also advises structuring content in an inverted pyramid format with the most important information at the top. Proper writing structure online involves breaking content into headings, bullet points, and concise paragraphs so it is easily scannable in 4 seconds.