Tumblr Introduces Mobile Ads

Your Tumblr mobile experience is ad-free no more: On Monday, Tumblr announced that is now serving ads in its iPhone and Android apps. The ads are native, taking the form not of banner ads but of posts marked by an animated dollar sign, which viewers can "like" and "reblog." Users will see no more than four sponsored posts per day, the company said in an e-mailed statement.

The move allows Tumblr to take advantage of the rapidly growing mobile advertising market, forecast to increase by 65% to $2.1 billion in the U.S. alone this year. Tumblr's mobile viewership is growing even more quickly, quadrupling in the last six months, according to the company. In a February interview with Mashable, Tumblr founder and CEO David Karp said he expects mobile traffic will overtake desktop traffic by early 2014 at the latest. Read more...