Mr. Hackett (LinkedIn)

Just a couple of weeks ago, Tumblr president John Maloney took his leave of the company. Now we hear that head of brand strategy and marketing (and former Betabeat Poachable) Matt Hackett has departed, too. Formerly Tumblr's VP of engineering, Mr. Hackett moved to his current role in September of last year.

He's the second major departure (after Mr. Maloney) since the advent of a kind of advertising on the platform.

Mr. Hackett announced his departure via email, as first reported by Reuters social media editor Matthew Keys (AKA @producermatthew). He didn't elaborate on his reasons, but apparently before making his decision, he talked it over with a host of people up to and including David Karp. Appropriately enough, Mr. Hackett has since uploaded a memorial gif to his personal Tumblr, along with the note, "I will definitely miss you guys."

We've reached out to both Mr. Hackett and Tumblr for comment and will update once we've heard more.