Yahoo also nearly doubled its revenue from mobile products last year, Mayer said, although she noted that the amount was still "not material" to the company's business. In 2013 Yahoo released new versions of its sports, finance and weather mobile apps, among others. Over the next year, the company plans to figure out ways to better monetize those sorts of products.
Stream ads, which are designed to blend into users' regular content streams, are a primary driver of revenue on mobile, Mayer said.
Yahoo also seeks to make more money from social networking, where it is a bigger player now as the owner of Tumblr. The blogging site began placing sponsored content into users' feeds this past April. The revenue Tumblr generated in the latter half of 2013 was not material to Yahoo's total sales, Yahoo's chief financial officer, Ken Goldman, said during the earnings call.
However, "we are hopeful that in 2014, it will be an important element in our revenue," Goldman said.