Tumblr, now owned by Yahoo!, has updated their mobile app to include a brand new discovery "experience." The update allows Tumblr users and readers to search both tags and blogs, as well as explore trending tags and blogs. And, whenever you're searching a tag, Tumblr will recommend specific blogs for you to follow.
This brings a high degree of search and discoverability to the growing social network. If you're posting on interesting topics and using the right phrases, your posts can dramatically increase in visibility, gaining you more traffic and followers.
Much of this capability was already available through the desktop version, so this update mimics that functionality for mobile, but also reinforces Tumblr's commitment to the mobile experience.