emily: david karp, founder and c.e.o. of tumblr. thank you for joining us. d: thank you for hanging out. this was really fun. ♪ . announcer: do you love eating your favorite fast food but orry about extra calories? this meal has a whopping 1,800 calories and 106 grams of fat. that can add up to big health concerns. the problem is our bodies cannot take it

david karp started tumblr before he was 20. he sold it to to yahoo!bout a billion dollars before he was 30. it is now one of the most creative and social blogging platforms, all from a guy who dropped out of high school, lives in a loft, and drives a vespa. joining me today on "studio 1.0," tumblr founder and c.e.o. david karp. thank you so much for joining us. david: thank you for having me. emily: thank you for having this on the schedule.