Yahoo CEO Marissa Mayer told audiences at the Yahoo Mobile Developer Conference in San Francisco Thursday that her company hit $1.2 billion in mobile revenue last year. With about 575 million monthly mobile visitors, that makes Yahoo "the third-largest mobile ad company in the world."
She also announced that there are now 500 people working at Yahoo mobile to revamp the app offerings. That is up from just 50 people two years ago.
In development news, the company announced the Yahoo Mobile Developer Suite. That will allow for app marketing and ad publishing, among other products.