"David founded Tumblr ten years ago as a space for the world's creators, and we thank him for his c…

Some feel that this kind of charitable giving is not a good enough solution from the tech industry:…

We're teaming David up with GE's Beth Comstock, who is backed by one of the smartest digital market…

Yahoo Inc. CEO Marissa Mayer has pledged not to make any dramatic changes at Tumblr. As part of tha…

And if having David Karp and Obama discussing your question just isn't doing it for you, the White …

Where usually, the release notes include a list of changes to the app (or at least the frustratingl…

One person interviewed for the job said he was asked if he is ready to be Karp's "Sheryl Sandberg,"…

Both Karp and Mayer love creativity, she said. They also share similar ideas about being a platform…

Bijan Sabet, a general partner at Spark Capital, told us at Startup 2013 last week how he met David…

Of course, Karp was not removed and he sold the company to Yahoo this year for $1.1 billion, provin…

Palo Alto is located about 35 miles south of San Francisco. Zuckerberg's home in Palo Alto is worth…

Compare that to another fact Yahoo also revealed: Tumblr had $16.6 million in the bank when Yahoo b…

Tumblr launched mobile ads earlier this week, and Karp tells us BC, GE, AT&T, Home Depot, Pepsi…

We're told by one of our sources — a source close to Tumblr — that Tumblr doesn't need to raise mor…

So it felt like Facebook was sending a message. Given the news of the day, here's a theory: Faceboo…

"There's a lot that I feel like I missed out on," Karp tells Bercovici. "Just a whole lot of normal…

According to Tumblr's policies: "You have to be at least 13 years old to use Tumblr. We're serious:…

Karp and his girlfriend took a boat tour around NYC with one of his investors, Brad Burnham.His Tum…

“As part of the narrative, I have included passages of dialogue. Dialogue— what words were said— is…