This document discusses 3 ways to hack the purchase funnel. It begins by asking why purchase funnels are important and whether they really exist. It then outlines 3 ways to improve performance in the purchase funnel: 1) showcase offers and recommend other products to capture additional sales, 2) incentivize returning customers with coupons, and 3) leverage mobile traffic which takes fewer clicks to reach merchants and make purchases. The overall message is that advertisers should focus on cultivating early purchase intent across multiple touchpoints to improve conversion rates.