Todd Morgenfeld
Analyst · Ross Sandler with Barclays
Thanks, Ben. I'll share some further details on the trends we saw in Q3 and provide a preliminary outlook for Q4. We were pleased with the financial results that we delivered. Q3 revenue of $633 million grew 43% year-over-year, with adjusted EBITDA margins expanding nearly 1,100 basis points to 32% when compared to the third quarter of last year. While most of the details about our financial performance is in our shareholder letter, I'd like to provide a little bit of additional color. We estimate that absent the macro supply chain issues this year and the benefit from the social media boycott last year, advertising spend from CPG advertisers would have had a positive mid-single-digit impact on our Q3 year-over-year revenue growth. Also, we continued to scale the distribution and placement of Idea Pins during the quarter. We estimate that the negative impact to our Q3 year-over-year revenue growth was in the mid-single digits. This impact was factored into our guidance for Q3. Finally, we don't believe we saw a material revenue impact from Apple's ATT policy changes during Q3. That said, it's still too early to predict the long-term revenue impact of these and future iOS changes. On engagement, global monthly active users grew 1% year-over-year. We continued to face headwinds, primarily from pandemic easing, as Ben described, but also due to a lower contribution to monthly active user growth from Gen Z users and due to SEO changes that impacted web traffic to our service, particularly in certain emerging international markets. We remain encouraged by the fact that global mobile app MAUs continue to grow double digits year-over-year. In the U.S., our mobile app MAUs remained relatively resilient when compared to our web-based MAUs, which declined double digits year-over-year. Turning to our preliminary outlook for Q4. The exact impact of the pandemic and its aftermath on our engagement and revenue remains unknown. On the engagement side, it's worth pausing for a moment to recap our understanding of engagement trends on Pinterest over the last couple of quarters. When lockdowns began to ease last spring, we saw a precipitous drop in some of our core at-home use cases like home decor, cooking and DIY, and they haven't fully recovered yet. When you look at Pinterest today, the propensity to adopt at-home use cases, such as home decor and food and drink, is less than it was before the pandemic began, while the propensity to adopt use cases like beauty and women's fashion has grown. That's what's driving our belief that we're not in a normal environment yet. As Ben said, we don't believe that this trend reflects a permanent change in human behavior, and we think monthly active users will eventually return to a more normal seasonal growth pattern. While we believe this, the timing is uncertain because the pandemic and subsequent user behavior remains difficult to predict, as evidenced by Q3 monthly active users not following a typical seasonal trend. So we're monitoring this as well as SEO changes and the impact of time spent on competitive platforms as we mentioned last quarter. In this environment, we continue to build the most inspiring product we can, and we're confident that the investments we're making in native content will be engagement and revenue-accretive in the long term. Given this context, we think it is most helpful to let you know where we are today. As of Tuesday, November 2, U.S. monthly active users were approximately 89 million, and global monthly active users were approximately 447 million. While the quarter-to-date trend suggests some stabilization of monthly active users, the pandemic unwind has distorted our typical seasonal trends as we saw in Q3, so it's hard to predict exactly how the quarter will play out from here. On the revenue side, we expect total revenue to grow in the high teens on a percentage basis year-over-year. Please note that our Q4 revenue guide takes into account a few considerations. First, the macro environment remains challenging. For our CPG advertisers, supply chain issues are still front and center, and they're not sure when things will improve. Also, it's possible that the macro and supply chain issues will affect other non-CPG verticals more in Q4 than they did during the third quarter. Second, we're facing tough year-over-year comps this quarter. In the year-ago quarter, our investments in ads automation meaningfully drove year-on-year revenue, we had a very strong Q4 2020 holiday season, and we attracted ad spend for being a positive platform during the social media boycott in the 2020 election. Third, we continue to monitor the impacts that higher CPAs could have on our more price-sensitive advertisers. There are some exogenous factors that appear to be resulting in higher CPAs, including overall demand for digital ads from advertisers. On Pinterest specifically, if engagement declines continue, we'd eventually expect to see some constraints on our monetizable supply and, in turn, higher CPAs. This is not something we're seeing today, and we are monitoring this dynamic. At the same time, we're investing in a number of opportunities to monetize our existing supply and help advertisers achieve their goals. Finally, as we scale the distribution of Idea Pins, traffic will increasingly shift to relatively undermonetized surfaces such as Idea Pins streams and our new vertical video, Watch tab. These new surfaces will likely remain under monetized in the medium term as we optimize the user experience to drive engagement. This investment will likely be a modest headwind to revenue in the future quarters, as it was in Q3, and as reflected in our Q4 guide. However, we believe that Idea Pins will be both engagement and revenue-accretive over time. Finally, I'd like to touch on expenses. We continue to invest in the growth of the business in accordance with our key strategic priorities of inspiring content, the Pinner experience, advertiser success and shopping. Our non-GAAP operating expenses in Q3 grew 26% year-over-year. We expect Q4 non-GAAP operating expenses to grow in the low-teens percentage basis quarter-over-quarter as we continue to ramp investments in our long-term strategic initiatives and invest in our brand-marketing campaign in the fourth quarter. Thank you to our teams at Pinterest, our advertising partners, our creators and all of the people that come to Pinterest to find inspiration. And with that, we can open it up for questions.