Tumblr, one of the largest blogging platforms in the world, has hit over 100 million blogs. Around 44.6 billion blog posts have been created using Tumblr. Last year Tumblr became one of the top 10 most visited websites in the world. About 80.2 million blog posts are being created on Tumblr per day. Founded by David Karp around 6 years ago, Tumblr now has about 167 employees and is available in 12 languages. This month, Tumblr announced plans to launch mobile ads on iOS and Android in order to hit their first annual profit.