Tumblr President John Maloney Leaves
John Maloney, who has steered day-to-day operations at Tumblr for nearly four years, is stepping down. The company hasn’t announced a replacement for Maloney’s president slot. Maloney had previously employed Tumblr CEO David Karp at Urban Baby. Last week, Karp announced that his company, which has yet to generate significant revenue, would start selling advertising.