Microblogging with Tumblr founder, David Karp

You'll want to blog this! We catch up with David Karp, the Founder and CEO of microblogging site Tumblr, who offers tips on how to get more followers and expresses amazement and gratitude for how much the site has grown and been utilized by popular artists. We wonder which BlackBerry app is his favorite? Hmmm... Hosted by Kinsey Schofield.