In the past two years, watch time of “shop with me” videos has grown over 10X on mobile alone. Appears In Make the grade for back-to-school: 4 YouTube trends to inform your video strategy Related Data 68% of YouTube users watched YouTube to help make a purchase decision. During the previous holiday season, 61% of shoppers' online purchases were made on a smartphone, a 27% increase YOY. Over 1K years of watch time on “shopping spree” videos over the past two years. Mobile watch time of test drive videos on YouTube has grown by over 70% in the past two years. On YouTube, watch time for shopping-related videos grew more than 5X in the U.S. between 2016 and 2018. Top 10 shopping-related videos, ranked by watch time, account for more than 900 years of total watch time in the past three years.