&gt; but what about all the other acquihires that were ostensibly done to bring in engineering talent?<p>I can&#x27;t speak for the other acquisitions, but at Tumblr it&#x27;s safe to say that nearly all engineering talent that was there pre-acquisition has left. I&#x27;m not able to speak to reasons why, but suffice to say, if acquiring Tumblr was intended to be an acquihire, the plan failed.