jun 30 2015 links http://recode.net/2015/06/29/coding-for-liberty-on-the-ground-at-rand-pauls-presidential-hackathon/ http://recode.net/2015/06/29/can-facebook-win-with-messenger/ http://www.wired.com/2015/06/problem-putting-worlds-code-github/ http://blogs.wsj.com/cmo/2015/06/29/u-s-advertising-spending-falls-4-in-first-quarter/ http://www.zdnet.com/article/googles-search-practices-come-under-scrutiny-from-leading-academic-wu/ http://fortune.com/2015/06/29/yelp-competition-google/ https://www.washingtonpost.com/blogs/the-switch/wp/2015/06/29/more-than-21-million-people-watched-gamings-biggest-annual-show-on-twitch/ http://mgzr.us/Jj0F