The announcement by Apple of its new programming language Swift is prompting developers to consider yet again how to tailor their efforts in the battle between iOS and Android. Benedict Evans and Steven Sinofsky discuss the questionable history of cross-platform software, and strategies for startups building apps today. How developers can build great apps on both of the largest mobile platforms. This platform question is one Sinofsky has been grappling with for a very long time, and which he also details in this post: http://blog.learningbyshipping.com/2013/07/08/juggling-multiple-platforms-and-the-bumpy-road-ahead/

For Jim Gilliam, the founder of NationBuilder, community is everything. When he needed a double lung transplant, Gilliam turned to the Internet and to his online community to make it happen. He's organized political campaigns, made documentary films, and built his company NationBuilder by tapping into the power that large scale communities on the internet provide. Community at internet scale is a deep reservoir of people, ideas and yes, money, that Gilliam believes changes how we do almost everything - and makes almost anything possible.