This document provides 10 marketing hacks for startups. They include guest posting on other blogs to gain exposure, offering premium giveaways to attract users, using the Rapportive browser plugin to find contacts, promoting content on Hacker News, running app price drops to gain downloads, creating viral projects, adding social share buttons, promoting through AppSumo deals, reaching out to relevant bloggers, and gamifying signups like Dropbox. The document emphasizes that these tactics only work if the underlying product is truly good.