This document analyzes Facebook posting strategies for different industries. It finds that for the retail industry, engagement is highest when posts are made between 8pm-7am, on Wednesdays, with 1-2 posts per day and 1-4 posts per week. Posts should be concise (80 characters or less), ask questions, use fill-in-the-blank formats, and offer coupons/deals. For entertainment, engagement is highest on Fridays and Saturdays. For media, engagement peaks on Tuesdays and Thursdays.