Tumblr is a free microblogging platform and social network that allows users to post various types of media including text, photos, videos, and links. It has grown rapidly since its launch in 2006, reaching over 35 million posts per day and nearly 11 billion total posts as of 2011. The average Tumblr user creates 14 posts and follows 3 blogs per month, with half of posts being photos. While initially overshadowed by Twitter and Facebook, Tumblr has become one of the most interesting social networks for marketing due to its customizable templates and ability to create followers and share content. Marketers can use Tumblr to create brand awareness and change perceptions by engaging with interested users.