Yahoo is testing sponsored posts within Tumblr’s mobile apps, featuring ads from Sony Pictures and 20th Century Fox. The studios aim to generate buzz for movie releases, while Yahoo is hoping to monetize its 300+ million users. The sponsored posts will appear in a list of Tumblr’s most popular blogs under the “Explore” tab, linking to the blogs dedicated to the respective films. Other advertisers include TBS, Delta Air Lines and Calvin Klein. Continue reading Tumblr Launches Beta Advertising Model with Sponsored Posts