David Karp

Founder, Tumblr

Born in 1986, David left high school to run technology at UrbanBaby.com, until CNET Networks acquired it in 2005. He spent two years at the helm of his development firm, Davidville, before his team launched the publishing platform Tumblr.com. After gaining an instant cult following among artists and new-media influencers, Tumblr took on funding in October 2007 from a number of investors including Spark Capital and Union Square Ventures.

Tumblr lets you effortlessly share anything. Post text, photos, quotes, links, music, and videos, from your browser, phone, desktop, email, or wherever you happen to be. You can customize everything, from colors, to your theme's HTML. We launched 2 years and 8 months ago out of our office in New York City. Since then, we've grown from a team of two, to more than ten people. Tumblr is something we've always wanted, and we're thrilled so many people care about it as much as we do.