Some Top Brands Use Tumblr To Generate Marketing Presence http://bit.ly/1bTZJ6I Yahoo this spring made a $1 billion bet when it acquired Tumblr that the social blogging service would help expand its audience and eventually generate more ad revenue. While still a nascent ad
platform, nearly a third (31%) of top brands have already set up a marketing presence on Tumblr.
via Tumblr http://mhandy1.tumblr.com/post/59299948865
