In four short years, Tumblr has grown from relative obscurity to start-up darling to international microblogging network. The platform has grown a staggering 900% in the past year and eclipsed platform competitor WordPress, largely due to its global reach and brand-building potential. Those under Tumblr’s influence are fiercely loyal — with 2% of users making up 43% of total visits — and they log in from all over the world. Take a look behind the scenes at Tumblr’s influence on the web, including top tags and fun facts, in this handy infographic.