On average, advertisers now spend "north of six figures" on their Tumblr campaigns. So David Karp, Tumblr CEO, said Wednesday. “The 6-year-old blogging medium has lagged far behind Facebook
and Twitter in the money-making department,” CNet writes. “The company has been trying to change that in recent months as it pushes a more aggressive strategy to get big brands to pay top
dollar to reach its highly influential community.”