David Karp is a young entrepreneur who is best known for founding the microblogging and social networking website Tumblr. Karp launched Tumblr in 2007, and the website quickly gained popularity among users who were looking for a more visual and user-friendly platform for sharing content online. Karp’s success with Tumblr has made him one of the youngest and most successful entrepreneurs in the world. In 2013, Yahoo! acquired Tumblr for over $1 billion, making Karp a millionaire at the age of 27. He remained with the company as CEO until 2017, when he announced his decision to step down. In addition to his work with Tumblr, Karp is also involved in several other entrepreneurial endeavors. He is a board member of the New York City Ballet, and has also invested in and advised several other startups. Despite his success, Karp has faced some criticism and controversy. Some users have accused Tumblr of being too permissive with adult content, and the company has faced several high-profile cyber attacks. However, Karp has remained focused on his mission to provide a creative and expressive platform for users, and continues to be a prominent figure in the tech industry.