Half an hour into their two-hour testimony on Wednesday before the Senate Intelligence Committee, Facebook COO Sheryl Sandberg and Twitter CEO Jack Dorsey were asked about collaboration between social
<img src="http://eu.beta.techcrunch.com/wp-content/uploads/tweettrumps.jpg" alt="" title="tweettrumps" width="249" height="52" class="shot" />Who says nothing useful ever comes of a hackathon? Enter <