"These are issues we identified quickly and are working quick to fix." Twitter's investor relations team said the issue affected the ability to deliver ads, which make up the bulk of revenue. "In Q3, we discovered, and took steps to remediate, bugs that primarily affected our legacy Mobile Application Promotion product, impacting our ability to target ads and share data with measurement and ad partners," Twitter's investor relations team tweeted.
Chief financial officer Ned Segal said Twitter is working on a fix but that the glitch is expected to have a negative impact in the fourth quarter. The bugs mainly affected Twitter operations outside the United States, where ad revenue was up just five percent compared with 11 percent for the US. Overall, advertising revenue totaled $702 million, up eight percent from last year.
Twitter boosted the number of "monetizable" daily active users, the new measurement used by the platform, by six million from the past quarter to 145 million. Twitter has stopped using a count of "monthly active users," which was 330 million earlier this year, in favor of the new measure of daily users on the mobile app or website who see ads in their feeds.
Dorsey said the growth in users represents a "steady refinement of Twitter" as it works to improve the platform and weed out inappropriate content. "This is an incredibly strong foundation to build upon," he said. Dorsey said Twitter has improved its automated systems to remove unwanted content, and now takes down more than 50 percent "proactively" and "without a bystander or first person report."