According to Mayer, Yahoo now has 340 million mobile viewers monthly. While she didn't give any older figure for comparison, she did say that it has increased its mobile workforce by 6 times. Some of the newcomers in the deepartment found themselves on Yahoo's payroll thanks to an acquisition. Yahoo recently purchased Tumblr for $1.1 billion. And mobile seems to be paying off nicely for Mayer and her company.
Since launching a tablet app version of Yahoo mail, the number of daily active users on the mobile version of Yahoo mail has increased 120%. Since launching the new Yahoo app with Summly integration, the average number of daily users has increased by 55% while the average amount of time spent viewing the app rose by 60%. Page views grew year-over-year.
Mobile is one of four key areas that Mayer is counting on for future growth for Yahoo. She says that Mobile is "still early," but is "growing quickly."