President Obama has taken to nearly every major internet platform to hold online chats with Americans, and today he added Tumblr to that list. Obama invited founder David Karp and Tumblr to the White House for an education-focused QA session. Obama took one question from a user named HaikuMoon and even mentioned the online handle in his follow-up, drawing big laughs. You wouldnt know it by looking at you, but youre like LeBron or Durant, Obama told Karp, the 27-year-old who sold Tumblr to Yahoo last year for around $1.1 billion.