Tumblr has changed the face of Internet culture as we know it, paving the way for GIFs, memes, and a full boat of other noteworthy, digital trends. And after recently being acquired by Yahoo! for the weighty sum of $1.1 billion, you better believe that interest in the already-popular blogging platform has only picked up. If you want to learn more about it, look no further than Damien Scott's profile of the site's CEO and founder, David Karp. Scott and Karp discuss the future of Internet advertising, Tumblr, and the path that the young tech genius took to make his first billi.